It’s a shame when, after replacing the screen on an iPhone 4, 4s, the touchscreen does not work, and using the device becomes almost impossible. Why did this happen specifically to your gadget? It’s wise to ask a specialist in service center(SC), but main reason malfunctions, today, are considered self-replacement display module.
Who is to blame and what to do?
If the touchscreen on the iPhone 4, 4s does not work after you repaired the device at home, following video instructions from the Internet, you only have to blame the “instructor” and yourself. If the touchscreen currently works poorly and intermittently, then after the second attempt to fix it, it will completely stop responding to touches.
If the replacement was carried out at a service center mobile devices, then the following causes of failure are possible:
- If the phone was hit or dropped, the cable became disconnected or the display module was damaged. Remember, maybe the “apple” recently fell, or the gadget was squeezed into a tightly stuffed bag? Any incorrect mechanical action is a danger to the fragile device.
- Water got on the iPhone and leaked inside. Even a small amount of moisture can damage parts and oxidize microcircuits.
- Sometimes the problem is the low quality of the spare part that was used during replacement. Are you sure that the iPhone today has an original display module? If the component is a copy, and an “economy version”, then there is nothing surprising in the malfunction.
Do you want to know what to do if the sensor does not work on your iPhone 4, 4s? Here's a hint, do this:
- Simultaneously press and hold the home key and the power button of the device for 15 seconds. The device will reboot and display the Apple logo. It is possible that the touchscreen will work better after this.
- Free the display surface from the film and remove the protective case. Check the sensor response.
It is not recommended to take any further actions on your own.
Contact us!
Call the service center and describe the problem over the phone or come to us for a free consultation. You won’t have to pay a single ruble to diagnose the causes of a malfunction!
The master will disassemble the device, clean it from dirt, dry it if necessary, and replace the glass on the iPhone 4, 4s in St. Petersburg, right before your eyes!
We use only original spare parts purchased from trusted manufacturers to repair iPhone 4, 4s in St. Petersburg, and we provide a guarantee for the services.
By contacting the service center, you will bring your favorite gadget back to life in 30-60 minutes, and our prices will surprise and delight you!
If your iPhone stops responding to touch, there are several repair options:
replace the entire module;
replace the touchscreen (to do this you need to disassemble the model).
However, there are cases when repairs as such are not required. Sometimes the sensor stops working as a result of a software failure or poor cable contact.
The contact may disappear after a fall, or as a result of poor-quality repairs at a service center. It is impossible to find out the exact cause of the breakdown without disassembling the phone, so if you do not have the necessary skills, you should not deal with this problem yourself. Unless if there is a software failure, you can try to fix everything yourself by resetting the settings to factory settings.
You need to do a reset first. Very often this allows you to solve a problem with the performance of the sensor and avoid a trip to the service center. To reset the device to factory settings, connect it to your computer and perform a reset.
You can do it without connecting to a computer. To do this, press and hold the power and home keys. You need to keep the buttons pressed for 10-20 seconds. After this, the device will reboot. Before resetting, be sure to do backup copy your phone.
If the reset does not help, then you need to start disassembling. To do this, you need to stock up on the necessary tools, including a star screwdriver, plastic spudgers for disassembling the case and a suction cup for the display. It's not difficult, watch the video on how to disassemble an iPhone.
It is necessary to remove the cover and check how well all the cables are connected. There are 3 cables coming from the display module. One responsible for the sensor, second for display image and third comes from the “Home” button.
Sometimes, after a fall, the cable flies out of its socket, and without good contact the sensor will not work. It is necessary to install the cable until it clicks and good contact should appear.
After checking the connection of the loop with motherboard check the functionality of the sensor. If everything works, then you can safely use the phone, but be prepared for the fact that if you fall, the problem may recur. If it is not possible to restore functionality, then it is necessary to change the sensor.
It is best to have your smartphone repaired at a service center. Having the necessary experience, you can repair your iPhone yourself. The easiest option for this is assembled.
В in this case you need to buy a new module of the desired color, disassemble the smartphone and replace the damaged module with a new one. With this type of repair, you don’t have to worry about the continued performance of your iPhone. Work new model should be no worse than a new phone.
More complex repairs will be required when replacing only the sensor. In this case, you will have to re-glue the sensor with complete disassembly module. In this case, it is very easy to damage working elements - cables, display and protective glass, which is easy to break when unsticking the module.
In some cases, neither replacing the entire module, nor repairing it, nor flashing the smartphone's firmware helps, for example, if the motherboard or image controller is damaged.
In this case, you can repair the phone only by re-soldering the controller or replacing motherboard. It is better to carry out such repairs at a service center.
Before starting work, ask the technician to carry out diagnostics. Only after this will the real cause of problems with the touch screen become clear.
Frequent users modern smartphones Apple is interested in what to do if the sensor on the iPhone fails, for example, after replacing the glass. And all because all the work mobile devices With touch displays is directly related to the high sensitivity of the screen to pressure, with which you can use the gadget’s functions, view menus, and work with documents. If the sensor stops working, even after replacing the display, you lose the opportunity to fully realize your needs, which are often very necessary to fulfill.
Why does the sensor on a smartphone stop working?
The touchscreen on an iPhone can start to glitch completely spontaneously, for example, after replacing the display or if the smartphone has been dropped. As a rule, the reasons why a particular phone model does not respond touch screen touch or touchscreen responds intermittently and is associated with mechanical damage to the device. To protect the display from impacts, you can install a protective glass on it or replace the film on it. Without additional protection, for example, if it falls, the touchscreen on the iPhone sometimes begins to freeze or completely fails.
Also, the reasons why the iPhone screen glitches and the touchscreen stops working are the following:
- liquid entering the device body
- crash after replacing software
- failure to comply with manufacturer's requirements when replacing display glass
If you are sure that the iPhone has not been dropped or water has been spilled on it, but it does not respond to touches, does not turn on, or does not respond correctly to presses, then most likely there is a software malfunction that you can fix yourself.
How does a malfunction of the display module manifest itself?
There are several signs that indicate that the sensor is faulty or the touchscreen on the iPhone is not working. These include the following:
- lack of sensor response to touches in a certain part of the screen
- ignoring any clicks on the display, which indicates that the sensor is lagging
- random operation of the gadget after it has been dropped or after replacing the glass (applications and documents open on their own)
Cleaning your smartphone screen
When starting to restore the functionality of a sensor that does not work well, freezes and slows down after replacing the glass or after you dropped it, you must first clean the display of your smartphone. You will not harm the phone in any way, but you will improve the connection, and perhaps the sensor will stop freezing and slowing down. This method will help if the display does not turn on, does not respond to touch, or the sensor periodically glitches.
If the sensor does not work well when buttons are pressed, and it often freezes or slows down, wipe the screen with a soft, lint-free cloth moistened with glass cleaning fluid various models phone.
How to reboot your phone
If the touchscreen on an iPhone, after replacing the display or for some other reason, periodically freezes or the lower part of the sensor does not work, then you can fix the problem by rebooting the phone. When the sensor on your iPhone fails, do the following:
- Press and hold the power button and the Home key together for 20 seconds
- wait until the device restarts and the Apple logo appears on the display
- check if the sensor is working by touching any icon
This instruction will become one of possible ways how to restart your smartphone if the touchscreen does not work or any part of the iPhone sensor stops functioning
Check your accessories if your screen is frozen or won't turn on
There are situations when it is accessories that get in the way normal operation display module and because of them the iPhone screen of any model becomes dull and glitchy when buttons are pressed on it. For example, if the original protective film was glued onto the glass incorrectly, the sensor stops working completely or only becomes dull at the bottom.
In addition, today you can buy any bumper for an iPhone, but not all of them can boast high quality. If the bumper you purchased blocks the top or bottom of the display, it will interfere with the normal functioning of its module, and the screen will begin to glitch. To understand whether this is the reason why the touch screen does not respond, you need to remove the back cover and test the operation of the touch screen on the phone. If the problem is in the bumper, then the operation of the sensor, which sometimes freezes, will then be restored. If, after removing the accessory, the screen on the iPhone does not stop becoming dull and glitchy, then you need to further look for the cause of the malfunction of the display module.
What to do if the display module is frozen or does not work well
If rebooting the device does not produce results and, as before, the sensor is buggy, or it does not respond to pressing, then most likely the problem does not lie in software glitch, and if there is a malfunction of the internal components of the phone, you will have to replace the failed part. In this case, you should contact professional technicians who will diagnose the screen, determine the sensor malfunction and repair the phone.
If the keys periodically glitch and the sensor lags after you dropped the phone, or the display does not respond to pressing, a specialist will first determine the cause of the malfunction and then eliminate it. After diagnostics, the technician will tell you about the condition of the smartphone that was dropped or flooded with water, and why the sensor froze or did not work well. If required, he will carry out a high-quality replacement of the display screen.
In what cases will it be necessary to change the display?
Screen iPhone any The model is regularly exposed to various influences, which is why the touch screen may not respond to touches. Also, scratches on the display can cause the lower part of the sensor to not work. The solution to the problem when the entire screen or part of the iPhone sensor stops working is to replace the glass or install a new module.
You will have to change the display when the sensor malfunctions or displays information incorrectly in the following cases.