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Help samsung galaxy s4 problem

Panesar98

Lurker
Hey guys im having this problem with my s4. Randomly when i unlock it, the screen turns green, and you can see the original screen very faintly. If you keep locking it and unlocking it, the problem will eventually go away and the phone will work normally, until a couple hours later when it happens again. I was wondering if you guys could help me diagnose this problem.
 
I had something similar on an older Samsung phone (infuse) with custom kernel. Went away with different kernel. Are you rooted? Done any modifications?
 
I had the phone rooted, and modified to work with a pentaband network, but this was done after the problem started to occur. Im not sure if it is a hardware or software problem. I originally thought it was happening because of a faulty SD card, because it started happening after i put that in. But i took the SD card out and it is still happening.
 
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