Iphone 4 4s flickering display problem fix
Today I've come along a strange issue with 1 iPhone 4s. Display was flickering in all 4 corners of the screen. Searched for a solution but with no success.
For anybody else that face this problem... this is a software problem that causes this strange hardware issue. To fix this problem just do the following.
Go to SETTINGS--->BRIGHTNESS and disable Auto-Brightness for a few minutes and then re-activate it.
Your screen should be back to normal.
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