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The Galaxy A12 is a low-end slate Android smartphone released by Samsung in November 2020 as a successor to the Samsung Galaxy A11. Identifiable by model number SM-A125 (followed by version/carrier-specific character.

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Why does the phone screen black out and and go back to lock screen?

I am working on a Galaxy a12 for a customer. I replaced the LCD because the phone got bent in his pocket and damaged the display. After replacing the display, the phone randomly locks and goes black. When the side button is clicked it's back on the lock screen. Could this be caused by a faulty side/power button?

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Having same issue but haven't replaced anything


@charliegreer Is it a finger print unlocked the power button cause something may be messing with it to cause it to do that caus when you press the button it locks your phone. Mabey try cleaning it.


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Since you replaced the display, you try another as it may be defective. I doubt that a faulty power button would cause this issue. With the phone having been bent before, that could cause board damage that may cause this issue. Otherwise, I have seen that when a phone's storage gets full it can cause weird issues like this.

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Julian будет вечно благодарен.
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