iPhone 4,iPhone problems

How to Solve iPhone 4 Display Problem?

How to Solve iPhone 4 Display Problem?

Sometimes it happens that your iPhone 4 screen stops responding or starts to give you other problems even though it has not encountered any kind of physical damage. Not every time the issue is of your LCD screen, sometimes it also happens due to other reasons, as any of the components might be faulty, including the touch and display IC. But replacing the IC should always be considered as a last resort, as that’s the rarest thing that could happen, but still it can be the cause of the problem.

In the following lines you will get to know about two of the most common iPhone 4 display problems as well as their solution:


  • Only Display Light (Blank Display)
  • Not even display light (No  display at all)
  • Touch Screen not working at all.
  • Slow touch response.

Now, here is the solution for all the above mentioned display problems:


  • Restart your phone and check.
  • Go with a Software update, as most o0f the time this issue is also resolved by software update.

Hardware Solution

iPhone 4 display problem circuit

  • The very first thing that you should do is to check Display connector and check for any loose end, if it is fine then check it with another good LCD screen.
  • If Display connector is faulty or damaged, replace it and check it with the same or some other good LCD screen.
  • If that doesn’t work then check the filters of your display connector.

 iPhone 4 Display Back light Problem

iPhone 4 backlight problem

Sometimes it happens that your iPhone 4 only gives display without back light, and in order to overcome this problem all you have to do is to check the intensity / brightness of your phone, if it is less, then increase it as per your needs. If this step doesn’t work for you then:

  • Remove and re-plug display strip.
  • If the above step fails then check the connection from “Display connector pin” to “Capacitor” and then to “Backlight IC”. Put jumper if necessary.
  • If the connection between display connector pin, capacitor and backlight IC is fine then replace the display light IC, as display light IC is the cause of this problem.

 iPhone 4 Touch problem

iPhone 4 touch problem

If your iPhone 4 touch is not working then:

  • Restart your iPhone and verify whether it is working or not.
  • If it is still not working then re ball or replace touch IC of your iPhone 4.


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