The tablet's 8-inch screen is very convenient; it is not small, but at the same time small. Due to their small size, such portable devices fit even into a small bag and inside jacket pockets. At the same time, the designated diagonal allows you to comfortably watch movies, read books and browse the Internet.
However, build quality and optimization also play an important role when choosing, because a convenient form factor will not protect the user from glitches and quick breakdowns. Therefore, we decided to review 8-inch Samsung tablets Galaxy Tab, because it is the Koreans who are among the the best manufacturers portable devices.
Samsung 8-inch tablets – rating 2018
Samsung Galaxy Tab A 8.0 SM-T355 16 GB
Low price, beautiful appearance and good build– all this applies to the Galaxy Tab A 8.0 SM-T355. The device is distinguished by a simple “filling”, represented by Adreno 306 graphics and a Snapdragon 410 processor. This is not enough for games, but the device copes with all other tasks without problems. Among the significant disadvantages in reviews of the tablet, buyers highlight only the low resolution of 1024x768 pixels. At a cost of 12,000 rubles, I would like to see an HD display. In addition, it would hardly increase the load on the installed hardware.
Advantages:
- presence of a SIM card slot and network support fourth generation
- The battery lasts for a confident day of work
- excellent system performance in any task
- good brightness reserve and stable operation in the 4G network
Flaws:
- low pixel density
- cameras leave much to be desired
- suspended value
Samsung Galaxy Tab A 8.0 SM-T385 16 GB
Next up is another good 8-inch tablet from Samsung from the A line. For a few extra thousand, the user will receive a resolution of 1280x800 pixels, a 425 processor from Qualcomm, as well as Adreno 308 graphics. Such “stuffing” with an HD screen can even cope with some modern games. An important advantage of the device is also a slot for nano SIM and support for all LTE bands common in the Russian Federation. The battery of the tablet computer is also not satisfactory, because the device can run on it for about 14 hours with continuous video playback. This device could not become an ideal tablet computer only because of the lack of a fingerprint scanner and backlit touch keys.
Advantages:
- excellent color rendition and high display brightness
- uninterrupted operation in 4G networks
- productive hardware platform
- lasts a very long time on one charge
- fresh operating system
- build quality
- can be used as a smartphone
Flaws:
- no backlighting of buttons under the screen
- no fingerprint scanner
Samsung Galaxy Tab S 8.4 SM-T705 16 GB
If an 8-inch screen diagonal is just a little short of ideal for you, then the Galaxy Tab S 8.4 is your choice. The tablet has a first-class display with a resolution of 2560x1600 pixels (Super AMOLED Plus technology), characterized by a high brightness reserve. Other advantages of the device under review include an infrared port, a micro SIM tray and stereo speakers, which provide decent sound even by modern standards. The tablet works quickly, but taking into account the not the most energy-efficient hardware and the high resolution of the matrix, the battery should be installed more than 4900 mAh.
Advantages:
- the design of the device remains relevant to this day
- clear, bright and true-to-color matrix
- There is a cell phone mode, IRDA and stereo speakers
- smooth operation in everyday tasks
- good quality cameras
- built-in fingerprint scanner
Flaws:
- When loaded, the battery lasts for a maximum of 3 hours of use
- for its cost, 16 GB of built-in storage is not enough by today's standards
Samsung Galaxy Tab Active 8.0 SM-T360 16 GB
Most tablets quickly become unusable even after minor impacts. What can we say about contact with sand or water, which are almost always detrimental to electronic components. However, for the Samsung Galaxy Tab Active 8.0, none of these problems exist. This rugged tablet has a reinforced design that can withstand serious drops. The device is also not afraid of immersion in sand and liquid, so you can take it with you on vacation. Another advantage of Galaxy Tab Active 8.0 is a bundled stylus that not only improves the usability of the device in some scenarios, but is also suitable for creative people.
Advantages:
- convenient design and excellent protection of the case from dust and water
- good stylus included with the device
- great display if you don't need high ppi
- there is an NFC module and good stereo speakers
- Availability of 4G and phone functions
- unique design
Flaws:
- Android version 4.4
- dim display – in the sun the matrix does not have enough brightness
Samsung Galaxy Tab S2 8.0 SM-T719 LTE 32 GB
A combination of great design, impressive power, incredible convenience and affordable price. This is exactly what the 8-inch can offer you Tablet PC Galaxy Tab C2, offered in Russian stores from 23 thousand rubles. Wonderful display with a resolution of 2048 by 1536 pixels, made using technology Super AMOLED, as well as a very powerful hardware platform, suitable even for modern games, make this device a very attractive solution for any task. In addition, there is also a SIM card tray, so you can access the Internet from the tablet and make calls just like from a regular mobile phone anywhere.
Advantages:
- lightness, compactness and recognizable appearance
- good autonomy indicators
- gorgeous matrix and excellent ergonomics
- if you like to play, then the device will also please you
- Read SD cards up to 128 GB
- excellent combination of parameters and cost
Flaws:
- plastic cover scratches easily
- mediocre main camera without flash
Which 8-inch tablet from Samsung should I buy?
Each user purchases equipment for a specific purpose. Game lovers want access to their favorite entertainment even when away from the computer. In this case, the ideal solution would be Galaxy tablet Tab S2. If you often travel or love hiking, but you don’t want to be left without communication, then among the Samsung tablets with an 8-inch screen presented above, we recommend choosing a device with the “Active” prefix. As for students, schoolchildren, office workers and other average users, the South Korean brand produces wonderful devices for them as part of the A line.
Brightness and its settings; battery; sound
Minuses
Permission; camera; heat; price
Review
I bought it 2 weeks ago. On the first day, I was surprised that the home button area was getting very hot, although I didn’t have time to install anything and was tinkering with the settings. Then I noticed more heating on the rear side panel in the area of the volume buttons. Now it seems to be easier with this, either I’m used to it, or it heats up less). Appearance Stylish, good quality, quality of materials is good, although budget ones have better plastic. I liked that it came with the office package, a good standard video and audio player, and a bright, nice-to-touch display. I'm pleased with the reading mode, where the screen takes on a yellowish tint and is less straining on the eyes. Android immediately offered to upgrade to Android 6, although I liked the pre-installed one better. I did not observe any serious brakes. Screen resolution: you don’t get pleasure from watching movies (I compare it with the “Explay Imperium 8” tablet with FullHD for 8 thousand rubles), the picture is not clear, there are huge black frames due to the aspect ratio, the tablet is clearly not for cinema. The display is dirty, there are a lot of marks on the screen, I constantly clean it, I need a film. As for the Internet, I won’t say that such a screen is more convenient than 16:9, depending on who you are. And the sound is good, loud speaker, I was also pleased with the sound quality in the headphones, good sound settings. Regarding performance, a 5GB and 1080p movie hangs mercilessly in MXplayer and AC3 Player; in the standard player it runs without lags, but without sound (there is no AC3 codec). Perhaps there is still something to be configured here, although I have not found a solution. I didn’t run any heavy games, but I can just play with them. The menu does not freeze, the video is on VK full screen mode They slow down and stop, although there are no problems with communication, nor with YouTube. There is not enough flash on the camera and backlights touch buttons, in the dark sometimes I miss. The front one has no focus, the quality of both cameras is poor compared to the previous Chinese one (it had 8 and 5 megapixels). There is not enough compass for Stellarium, but it is possible without it. There are no problems with communication, everything is caught. The battery lasts 2 days quietly in Internet use and infrequent games. It takes 4 hours to charge. I have not tested the navigator yet. I called from it once, the audibility is weak. In general, this device is not bad, but it’s not worth the price, I got it cheaper - and I advise you). Despite so many shortcomings, the tablet is of good quality and I hope it will last a long time. The previous Explay, although it was your performance and camera, died after six months, the money was returned.
Information about the make, model, and alternative names of the specific device, if available.
Design
Information about the dimensions and weight of the device, presented in different units of measurement. Materials used, colors offered, certificates.
| Width Width information - refers to the horizontal side of the device in its standard orientation during use. | 208.4 mm (millimeters) 20.84 cm (centimeters) 0.68 ft (feet) 8.2 in (inches) |
| Height Height information - refers to the vertical side of the device in its standard orientation during use. | 137.9 mm (millimeters) 13.79 cm (centimeters) 0.45 ft (feet) 5.43 in (inches) |
| Thickness Information about the thickness of the device in different units measurements. | 7.5 mm (millimeters) 0.75 cm (centimeters) 0.02 ft (feet) 0.3 in (inches) |
| Weight Information about the weight of the device in different units of measurement. | 338 g (grams) 0.75 lbs 11.92 oz (ounces) |
| Volume The approximate volume of the device, calculated based on the dimensions provided by the manufacturer. Refers to devices with the shape of a rectangular parallelepiped. | 215.54 cm³ (cubic centimeters) 13.09 in³ (cubic inches) |
| Colors Information about the colors in which this device is offered for sale. | White Grey Black |
SIM card
The SIM card is used in mobile devices to store data that certifies the authenticity of mobile service subscribers.
Mobile networks
A mobile network is a radio system that allows multiple mobile devices to communicate with each other.
| GSM GSM (Global System for Mobile Communications) is designed to replace the analogue mobile network (1G). For this reason, GSM is often called a 2G mobile network. It is improved by the addition of GPRS (General Packet Radio Services), and later EDGE (Enhanced Data rates for GSM Evolution) technologies. | GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz |
| UMTS UMTS is an abbreviation for Universal Mobile Telecommunications System. It is based on GSM standard and applies to 3G mobile networks. Developed by 3GPP and its biggest advantage is providing greater speed and spectral efficiency thanks to W-CDMA technology. | UMTS 850 MHz UMTS 900 MHz UMTS 1900 MHz UMTS 2100 MHz |
| LTE LTE (Long Term Evolution) is defined as a fourth generation (4G) technology. It is developed by 3GPP based on GSM/EDGE and UMTS/HSPA to increase the capacity and speed of wireless mobile networks. The subsequent technology development is called LTE Advanced. | LTE 850 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz LTE-TDD 2300 MHz (B40) LTE 700 MHz (B28) |
Mobile communication technologies and data transfer speeds
Communication between devices on mobile networks is carried out using technologies that provide different data transfer rates.
Operating system
An operating system is a system software that manages and coordinates the operation of hardware components in a device.
SoC (System on Chip)
A system on a chip (SoC) includes all the most important hardware components of a mobile device on one chip.
| SoC (System on Chip) A system on a chip (SoC) integrates various hardware components, such as a processor, graphics processor, memory, peripherals, interfaces, etc., as well as the software necessary for their operation. | Qualcomm Snapdragon 410 MSM8916 |
| Technological process Information about technological process, on which the chip is made. Nanometers measure half the distance between elements in the processor. | 28 nm (nanometers) |
| Processor (CPU) The primary function of a mobile device's processor (CPU) is to interpret and execute instructions contained in software applications. | ARM Cortex-A53 |
| Processor size The size (in bits) of a processor is determined by the size (in bits) of the registers, address buses, and data buses. 64-bit processors have higher performance compared to 32-bit processors, which in turn are more powerful than 16-bit processors. | 64 bit |
| Instruction Set Architecture Instructions are commands with which the software sets/controls the operation of the processor. Information about the instruction set (ISA) that the processor can execute. | ARMv8 |
| Level 0 cache (L0) Some processors have L0 (level 0) cache, which is faster to access than L1, L2, L3, etc. The advantage of having such memory is not only higher performance, but also reduced power consumption. | 4 kB + 4 kB (kilobytes) |
| Level 1 cache (L1) Cache memory is used by the processor to reduce access time to more frequently used data and instructions. L1 (level 1) cache is small in size and works much faster as system memory, and other levels of cache memory. If the processor does not find the requested data in L1, it continues to look for it in the L2 cache. On some processors, this search is performed simultaneously in L1 and L2. | 16 kB + 16 kB (kilobytes) |
| Level 2 cache (L2) L2 (level 2) cache memory is slower than L1, but in return it has a higher capacity, allowing caching more data. It, like L1, is much faster than system memory (RAM). If the processor does not find the requested data in L2, it continues to look for it in the L3 cache (if available) or in RAM memory. | 2048 kB (kilobytes) 2 MB (megabytes) |
| Number of processor cores The processor core executes software instructions. There are processors with one, two or more cores. Having more cores increases performance by allowing multiple instructions to be executed in parallel. | 4 |
| CPU clock speed The clock speed of a processor describes its speed in terms of cycles per second. It is measured in megahertz (MHz) or gigahertz (GHz). | 1200 MHz (megahertz) |
| Graphics Processing Unit (GPU) Graphics processing unit (GPU) handles calculations for various 2D/3D graphic applications. IN mobile devices ah it is used most often by games, consumer interface, video applications, etc. | Qualcomm Adreno 306 |
| GPU clock speed Speed of work is clock frequency GPU speed, which is measured in megahertz (MHz) or gigahertz (GHz). | 400 MHz (megahertz) |
| Amount of random access memory (RAM) RAM(RAM) is used by the operating system and all installed applications. Data stored in RAM is lost after the device is turned off or restarted. | 2 GB (gigabytes) |
| Type of random access memory (RAM) Information about the type of random access memory (RAM) used by the device. | LPDDR3 |
| Number of RAM channels Information about the number of RAM channels that are integrated into the SoC. More channels mean higher data rates. | Single channel |
| RAM frequency The frequency of RAM determines its operating speed, more specifically, the speed of reading/writing data. | 533 MHz (megahertz) |
Built-in memory
Each mobile device has built-in (non-removable) memory with a fixed capacity.
Memory cards
Memory cards are used in mobile devices to increase the storage capacity for storing data.
Screen
The screen of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.
| Type/technology One of the main characteristics of the screen is the technology by which it is made and on which the quality of the information image directly depends. | PLS |
| Diagonal For mobile devices, screen size is expressed by the length of its diagonal, measured in inches. | 8 in (inches) 203.2 mm (millimeters) 20.32 cm (centimeters) |
| Width Approximate screen width | 6.4 in (inches) 162.56 mm (millimeters) 16.26 cm (centimeters) |
| Height Approximate screen height | 4.8 in (inches) 121.92 mm (millimeters) 12.19 cm (centimeters) |
| Aspect Ratio The ratio of the dimensions of the long side of the screen to its short side | 1.333:1 4:3 |
| Permission Screen resolution shows the number of pixels vertically and horizontally on the screen. More a high resolution means sharper detail in the image. | 1024 x 768 pixels |
| Pixel Density Information about the number of pixels per centimeter or inch of the screen. Higher density allows information to be displayed on the screen with clearer detail. | 160 ppi (pixels per inch) 62 ppcm (pixels per centimeter) |
| Color depth Screen color depth reflects the total number of bits used for color components in one pixel. Information about the maximum number of colors that the screen can display. | 24 bit 16777216 flowers |
| Screen area Approximate percentage of screen area occupied by the screen on the front of the device. | 69.19% (percentage) |
| Other characteristics Information about other screen features and characteristics. | Capacitive Multi-touch |
Sensors
Different sensors perform different quantitative measurements and convert physical indicators into signals that a mobile device can recognize.
Rear camera
The main camera of a mobile device is usually located on its back panel and may be combined with one or more secondary cameras.
| Sensor type Information about the camera sensor type. Some of the most widely used types of sensors in mobile device cameras are CMOS, BSI, ISOCELL, etc. | CMOS (complementary metal-oxide semiconductor) |
| Image Resolution One of the main characteristics of cameras is resolution. It represents the number of horizontal and vertical pixels in an image. For convenience, smartphone manufacturers often list resolution in megapixels, indicating the approximate number of pixels in millions. | 2592 x 1944 pixels 5.04 MP (megapixels) |
| Video resolution Information about the maximum video resolution that the camera can record. | 1280 x 720 pixels 0.92 MP (megapixels) |
| Video recording speed (frame rate) Information about the maximum recording speed (frames per second, fps) supported by the camera at maximum resolution. Some of the most basic video recording speeds are 24 fps, 25 fps, 30 fps, 60 fps. | 30fps (frames per second) |
| Characteristics Information about additional software and hardware features of the rear (rear) camera. | Autofocus Digital zoom Geographical tags Touch Focus Scene Selection Mode |
Front-camera
Smartphones have one or more front cameras of various designs - a pop-up camera, a rotating camera, a cutout or hole in the display, an under-display camera.
Audio
Information about the type of speakers and audio technologies supported by the device.
Radio
The radio of the mobile device is a built-in FM receiver.
Location determination
Information about the navigation and location technologies supported by your device.
WiFi
Wi-Fi is a technology that provides wireless communication for transmitting data over close distances between various devices.
Bluetooth
Bluetooth is a standard for secure wireless data transfer between various devices of different types over short distances.
USB
USB (Universal Serial Bus) is an industry standard that allows different electronic devices to exchange data.
Headphone jack
This is an audio connector, also called an audio jack. The most widely used standard in mobile devices is the 3.5mm headphone jack.
Connecting devices
Information about other important connection technologies supported by your device.
Browser
A web browser is a software application for accessing and viewing information on the Internet.
| Browser Information about some of the main characteristics and standards supported by the device's browser. | HTML HTML5 CSS 3 |
Audio file formats/codecs
Mobile devices support different audio file formats and codecs, which respectively store and encode/decode digital audio data.
Video file formats/codecs
Mobile devices support different video file formats and codecs, which respectively store and encode/decode digital video data.
Battery
Mobile device batteries differ from each other in their capacity and technology. They provide the electrical charge necessary for their functioning.
| Capacity A battery's capacity indicates the maximum charge it can hold, measured in milliamp-hours. | 4200 mAh (milliamp-hours) |
| Type The type of battery is determined by its structure and, more precisely, the chemicals used. Exist different types batteries, with lithium-ion and lithium-ion polymer batteries most often used in mobile devices. | Li-polymer |
| 3G talk time 3G talk time is the period of time during which the battery charge is completely discharged during a continuous conversation on a 3G network. | 28 h (hours) 1680 min (minutes) 1.2 days |
| Characteristics Information about some additional characteristics device battery. | Fixed |
Specific Absorption Rate (SAR)
The SAR level refers to the amount of electromagnetic radiation absorbed by the human body while using a mobile device.
| Head SAR level (EU) The SAR level indicates maximum amount electromagnetic radiation to which the human body is exposed when holding a mobile device next to the ear in a conversation position. In Europe the maximum permissible value SAR for mobile devices is limited to 2 W/kg per 10 grams of human tissue. This standard has been established by CENELEC in accordance with IEC standards, subject to the guidelines of ICNIRP 1998. | 0.108 W/kg (Watt per kilogram) |
| Body SAR level (EU) The SAR level indicates the maximum amount of electromagnetic radiation to which the human body is exposed when holding a mobile device at hip level. The maximum permissible SAR value for mobile devices in Europe is 2 W/kg per 10 grams of human tissue. This standard has been established by the CENELEC Committee in compliance with the ICNIRP 1998 guidelines and IEC standards. | 0.899 W/kg (Watt per kilogram) |
| Head SAR level (US) The SAR level indicates the maximum amount of electromagnetic radiation that the human body is exposed to when holding a mobile device near the ear. Maximum value, used in the USA, is 1.6 W/kg per 1 gram of human tissue. Mobile devices in the US are regulated by the CTIA, and the FCC conducts tests and sets their SAR values. | 0.933 W/kg (Watt per kilogram) |
| Body SAR level (US) The SAR level indicates the maximum amount of electromagnetic radiation to which the human body is exposed when holding a mobile device at hip level. The highest permissible SAR value in the USA is 1.6 W/kg per 1 gram of human tissue. This value is set by the FCC, and the CTIA monitors mobile devices' compliance with this standard. | 1.521 W/kg (Watt per kilogram) |
Samsung Galaxy Tab A 8.0 is part of the line of mid-price tablets launched by Samsung in May 2015. The device has balanced characteristics, which are quite enough for high-quality video and traveling on the Internet. Works under Android control 5.0, significantly modified and supplemented by specialists from the Korean company. In particular, the line of tablets is equipped with multi-window (a feature that is not yet typical for Android). Compete with premium devices like Nexus 9 this tablet can’t, but it can easily compete with the Lenovo IdeaTab A5500.
Samsung Galaxy Tab A 8.0 technical specifications overview
As befits the “middle peasant”, Samsung Galaxy Tab 8.0 does not have shocking characteristics, but has quite good equipment.
1. A powerful CPU with a frequency of 1200 MHz and 4 cores, which is perfectly suited to the needs of Android 5.0, in which the developers have improved work with multi-core processors.
2. Modest 1.5 GB of RAM, which is enough for most applications, but almost back to back. Especially when it comes to “heavy” office packages from Microsoft, which will eat up 80% of the memory available after booting the system.
3. Adreno 306 graphics processor, quite acceptable not only for video and the Internet, but also for various games, including 3D.
4. A fairly bright and high-quality screen with a TFT PLS matrix, the diagonal of which is 8 inches. At the same time, the screen resolution of 1024x768 allows you to achieve a density of 160 PPI.
5. Wide range of connectivity options Samsung Galaxy Tab A 8.0 to various networks and wireless interfaces including 3G and LTE.
6. A nice bonus: there is a slot for installing memory expansion cards, you can install cards up to 128 GB.
One of the main advantages of the updated Samsung line, including Galaxy Tab A 8.0, is a light weight. The device weighs only 320g, which is comparable to some phones. This means that this tablet is easy to hold and convenient to use. Not a bad solution for every day.
Are you ready for the Samsung ecosystem?
Buying Samsung Galaxy Tab A 8.0, it should be borne in mind that this is far from pure Android 5.0. Koreans harbor dreams of creating their own Samsung ecosystem (their own application market, their own OS improvements, their own update system, etc.). On the one hand, there appear additional features. But in some cases, we would like devices to be more closely tied to the original state of the OS.
Contents: Tablet, network charger with USB connector, USB cable, warranty card, instructions, packaging
Product description
Your pet.
Set up Home screen mode to always have instant access to the information you need most: Galaxy Tab A 8.0 shows the time and date, calendar and weather. Personalize your Home screen saver with a slideshow of your favorite pictures and photos and Tab A 8.0 will be a great addition to your home decor...
The device works with NanoSIM cards from all GSM operators.
Keep up with the times. On the way to success.
The dynamics of modern life force us to thoughtfully approach the choice of tools to achieve our goals. Comfort is especially valuable when solving everyday problems. Comfort that goes hand in hand...
The device works with NanoSIM cards from all GSM operators.
Keep up with the times. On the way to success.
The dynamics of modern life force us to thoughtfully approach the choice of tools to achieve our goals. Comfort is especially valuable when solving everyday problems. Comfort that goes hand in hand with impeccable design that can highlight the style of its owner. Lightweight and thin tablet in an elegant case with smooth edges and metal rear panel The Galaxy Tab A 8.0 is designed for those who are constantly on the move. Your ideal assistant on the path to success.
Your pet.
Set up Home screen mode to always have instant access to the information you need most: Galaxy Tab A 8.0 shows the time and date, calendar and weather. Personalize your Home screen saver with a slideshow of your favorite pictures and photos, and Tab A 8.0 will be a great addition to your home decor.
Create!
Be impressed by the quality of photos you take with Galaxy Tab A 8.0! Thanks to the improved 8-megapixel main camera with F1.9 aperture, flash and autofocus, you get great photos even in low light. The front camera shoots with a resolution of 5 MP and will delight you with excellent selfies. And for the most creative and imaginative owners, Tab A 8.0 offers such additional settings, like HDR and Pro Mode.
When shooting is fun.
Taking pictures with the Galaxy Tab A 8.0 is easier than ever. The floating shutter button provides special ergonomics; now it is comfortable to hold the tablet while shooting, despite its size. And to zoom, simply drag the shutter button left or right.
Adaptive display.
Galaxy Tab A 8.0 is optimized to accompany you anytime, anywhere: at home, on the street, in the office. The colorful 8-inch display with Blue Light Filter adjusts the brightness balance to reduce eye strain so you can enjoy your favorite multimedia content seamlessly.
Powerful battery.
The future is today. The Galaxy Tab A 8.0's reliable battery with increased capacity is designed for long-term use. Enjoy watching videos and surfing the Internet without worrying about battery life.
Built for gaming.
Game Launcher feature allows you to group installed games in one folder for easy and quick access and has several game modes optimized for non-stop entertainment. A wide selection of games and videos will provide you with many hours of leisure time.
For the little ones.
Galaxy Tab A 8.0 has a feature parental controls to protect children from unnecessary and harmful information. Here are some wonderful animated videos, apps for teaching kids and various entertainment content, including interactive LEGO games, will provide children with a fun and rewarding pastime.
Main characteristics
Device type:
2G standards:
Standard mobile communications defines the technologies used and the principle of constructing mobile communication networks. Mobile communication networks are usually divided into analog (NMT, AMPS) and digital (D-AMPS, GSM, CDMA, WCDMA, UMTS), and also classified by generation (generation) stages of development of the standards themselves.
GSM(Global System for Mobile Communications) - the most popular and widespread standard cellular communication second generation 2G almost all over the world. In our country, as in most European countries, under this standard frequencies of 900 and 1800 MHz are allocated. In the countries of the American continent, it is customary to use frequencies of 850 and 1900 MHz.
The widespread introduction of GSM to replace outdated analogue networks has made it possible to significantly expand the subscriber base and the range of services provided, making cellular communications widely available. However, the specifics of GSM limit the services currently in demand based on high-speed Internet access.
GSM 1800 / GSM 1900 / GSM 850 / GSM 900
3G standards:
3G(Third Generation) - Third generation mobile communication technologies based on packet data transmission. Third generation 3G networks usually operate in the range of about 2 GHz, allowing data transfer at a speed comparable to a dedicated home Internet. In addition to standard voice services telephony, 3G networks are initially focused on various multimedia services, such as video telephony and video conferencing, online viewing terrestrial television and movies, listening to Internet radio, etc. The most common third generation communication standard is WCDMA (UMTS), operating in most European countries, incl. in Russia and CIS countries.
UMTS 2100 / UMTS 900 / UMTS 850 / UMTS 1900
4G standards (LTE):
4G (Fourth generation)- The fourth generation of mobile communications, characterized by high data transfer speeds and improved quality of voice communications. Fourth generation networks include technology mobile transmission data LTE(Long Term Evolution). Data transfer speeds using the LTE standard theoretically reach 173 Mbit/s for reception (download), and 58 Mbit/s for upload (upload).
LTE 1900 / LTE 1800 / LTE 2100 / LTE 850 / LTE 2600 / LTE 800
SIM card generation:
Each new generation of SIM cards is smaller than the previous one. Format Mini-SIM(2FF) appeared in the 1990s and is now used primarily in simple push-button phones. Cards Micro-SIM(3FF) have been used in smartphones since 2003 to this day. Nano-SIM(4FF) - the most compact map, installed in modern smart devices. eSIM is a chip built into the device onto which a virtual SIM card can be written. This format Not supported by all carriers.
Number of SIM cards:
The difference in the chemical composition of batteries determines their physical and consumer parameters.
Ni-Cd(Nickel - Cadmium) and Ni-Mh(Nickel - Metal Hydride) batteries are quite heavy and bulky. Being not completely discharged before recharging, they are prone to loss of capacity (memory effect), and therefore require periodic maintenance (charge-discharge, so-called training).
Against, Li-Ion(Lithium Ion) and Li-Pol(Lithium - Polymer) batteries do not have these disadvantages. However, they lose their charge faster at low temperatures and have poor resistance to drops. Ease of maintenance and comparatively smaller size and weight were decisive factors for their active use.
Li-Ion, 5000 mAh
Working hours:
Operating time in standby mode / during active use of the device.
The indicated values characterize the operating time of the device at ideal conditions and may differ from actual time. This feature is associated with the influence of many different factors, for example, temperature regime operation, the strength of the signal received from the base station, the frequency of use of the device and its additional functions.
NFC(Near Field Communication, "near field communication") - technology wireless communication, which makes it possible to exchange data between devices located at a distance of up to 20 centimeters. There are many possible uses for NFC technology: transferring files between devices, connecting to accessories, using the device as a payment card, etc.
Equipment:
Tablet, network charger with USB connector, USB cable, warranty card, instructions, packaging
Guarantee period:
Memory and processor
Amount of random access memory (RAM):
RAM, which is used for the operation of programs and applications in the device. The speed of the device depends on its size. The actual free memory capacity may differ from that specified by the manufacturer.
Built-in memory capacity:
Built-in device memory- the total amount of memory intended for storing both user data and applications installed by the manufacturer, and also includes a section with Operating system. The actual free memory capacity may differ from that specified by the manufacturer.
Display and keyboard
Display type:
TFT IPS- High quality liquid crystal matrix. It has wide viewing angles, one of the best indicators of color rendering quality and contrast among all those used in the production of displays for portable equipment.
Super AMOLED- if a regular AMOLED screen uses several layers, between which there is an air gap, then in Super AMOLED there is only one such touch layer without air gaps. This allows you to achieve greater screen brightness with the same power consumption.
Super AMOLED HD- differs from Super AMOLED in its higher resolution, thanks to which you can achieve 1280x720 pixels on a mobile phone screen.
Super AMOLED plus- this is a new generation of Super AMOLED displays, differs from the previous one by using a larger number of subpixels in a conventional RGB matrix. The new displays are 18% thinner and brighter than displays made using the old PenTile technology.
AMOLED- an improved version of OLED technology. The main advantages of the technology are significantly reduced power consumption, the ability to display a larger color gamut, reduced thickness and the ability of the display to bend slightly without the risk of breaking.
Retina-high pixel density display designed specifically for Apple technology. Pixel density per Retina displays such that individual pixels are indistinguishable to the eye at a normal distance from the screen. This ensures the highest image detail and significantly improves the overall viewing experience.
Super Retina HD- the display is made using OLED technology. The pixel density is 458 PPI, the contrast reaches 1,000,000:1. The display has a wide color gamut and unsurpassed color accuracy. Pixels in the corners of the display are smoothed at the sub-pixel level, so edges are not distorted and appear smooth. The Super Retina HD reinforcing layer is 50% thicker. It will be harder to break the screen.
Super LCD is the next generation of LCD technology, it is characterized by improved characteristics compared to earlier LCD displays. Screens not only have wide viewing angles and better color rendering, but also reduced energy consumption.
TFT- A common type of liquid crystal display. Using an active matrix controlled by thin-film transistors, it is possible to significantly increase the performance of the display, as well as the contrast and clarity of the image.
OLED- organic electroluminescent display. It consists of a special thin-film polymer that emits light when exposed to an electric field. This type of display has a large reserve of brightness and consumes very little energy.
The touch display is a conventional graphic display, on top of which either a pressure-sensitive substrate or infrared sensors are placed. Such a display reacts appropriately to presses with a stylus (pen) or fingers and is a more convenient way to interface with the device than a keyboard.
Photo/Video camera
Main camera:
Thanks to the built-in digital camera It's very easy to capture important moments in life or shoot a video. Modern smartphone cameras are often not inferior in quality to real cameras. Using two, three or even four modules allows you to take wide-format photographs, photograph distant objects and achieve the effect of artistic background blur - bokeh.
Autofocus:
Flash:
Designed for short-term and intense illumination of objects during shooting. IN cell phones It can be xenon (which is based on an electric gas-discharge lamp filled with xenon) or LED (LEDs act as a light source).
Communications and interfaces
WiFi:
WiFi(IEEE 802.11) is a high-speed wireless connection technology aimed at building corporate, private or public networks. The technology is based on the use of so-called multiple access points (hot-spots), to which client terminals are connected. Wi-Fi technology is described by many specifications (standards), which is reflected in their name by the last letter (for example, IEEE 802.11g).
On the base Wi-Fi technology Public Internet access points have been created in cafes, hotels, airports and other places. Connecting a device to such points is as simplified as possible and requires entering a network identifier (SSID), username and password.
Bluetooth module:
Technology Bluetooth implements wireless connection devices over a secure radio channel in the 2.4 GHz band. The technology is based on the use of profiles (services) as tools for performing specific tasks (audio gateway, hands-free, headset, file transfer, dial-up networking, serial port, etc.). Each profile contains a specific set of operations and defines possible areas of interaction between devices.
With a Bluetooth connection, devices can be located at a distance of up to ten meters from each other, and therefore, the development of wireless accessories is one of the prerogatives of this technology.
Bluetooth support stereo:
bluetooth stereo or A2DP (Advanced Audio Distribution Profile) - profile or bluetooth service, designed to transmit music in stereo sound. Devices that support the A2DP profile allow you to listen to music using wireless bluetooth headphones, thereby freeing you from the limitations of traditional wired stereo headsets.
Connection to PC:
By connecting the device to personal computer, you can quickly and conveniently edit telephone records or organizer notes, save important SMS messages on your PC or backups contents of the device, download various pictures, melodies, photos or video clips, go online.
Depending on the characteristics of the device, connection to a PC is carried out using an interface cable, infrared port, Bluetooth or Wi-Fi modules.
Audio jack:
Type of connector for connecting external audio devices (wired headsets, headphones, speakers). In many modern smartphones A universal connector is used for audio output, charging and data transfer, for example, USB Type-C or Lightning.
Messages
SMS:
SMS(Short Messages Service) or short text messages represent alternative way exchange of information in cellular networks. Most devices support receiving and sending SMS messages in both English and Russian. Type the desired text, for example, “Darling, I’m home. I kiss you and am waiting for you,” and within a few seconds it will be delivered to the mobile device you specified.
In addition, based on the SMS service, a variety of SMS services are provided, from weather forecasts and exchange rates, to dating and downloading simple melodies or pictures.
MMS:
MMS(Multimedia Messaging Service) is a universal technology for exchanging multimedia messages, which is a development of the idea of short SMS messages. Besides plain text, An MMS message can contain color pictures and photographs, sound files of various formats or short videos. In addition, MMS messages can consist of several frames, representing a kind of animation.
When sending multimedia messages, GPRS or EDGE packet data transmission is used. You can send MMS messages either to a device compatible with this technology or to email.
Additional functions
Sensors:
Accelerometer(or G-sensor) - sensor of the device’s position in space. As a main function, the accelerometer is used to automatically change the orientation of the image on the display (vertical or horizontal). Also, the G-sensor is used as a pedometer; it can control various functions of the device by turning or shaking.
Gyroscope- a sensor that measures rotation angles relative to a fixed coordinate system. Capable of measuring rotation angles in several planes simultaneously. A gyroscope together with an accelerometer allows you to accurately determine the position of the device in space. Devices that use only accelerometers have lower measurement accuracy, especially when moving quickly. Also, the capabilities of the gyroscope can be used in modern games for mobile devices.
Light sensor- a sensor that sets the optimal brightness and contrast values for this level illumination The presence of a sensor allows you to increase the battery life of the device.
Proximity sensor- a sensor that detects when the device is close to your face during a call, turns off the backlight and locks the screen, preventing accidental clicks. The presence of a sensor allows you to increase the battery life of the device.
Geomagnetic sensor- a sensor for determining the direction of the world in which the device is directed. Tracks the orientation of the device in space relative to the magnetic poles of the Earth. The information received from the sensor is used in mapping programs for terrain orientation.
Atmospheric pressure sensor- sensor for precise measurement of atmospheric pressure. It is part of the GPS system, allows you to determine altitude above sea level and speed up location determination.
Touch ID- fingerprint identification sensor.
Accelerometer
Satellite navigation:
GPS(Global Positioning System) is a satellite navigation system that provides measurements of distance, time, speed and determines the location of objects anywhere on Earth. The system is developed, implemented and operated by the US Department of Defense. The basic principle of using the system is to determine location by measuring distances to an object from points with known coordinates - satellites. The distance is calculated by the delay time of signal propagation from sending it by the satellite to receiving it by the antenna of the GPS receiver.
GLONASS(Global Navigation Satellite System) - Soviet and Russian satellite navigation system, developed by order of the USSR Ministry of Defense. The measurement principle is similar to the American GPS navigation system. GLONASS is designed for operational navigation and timing support for land, sea, air and space-based users. The main difference from the GPS system is that GLONASS satellites in their orbital motion do not have resonance (synchrony) with the rotation of the Earth, which provides them with greater stability.