Why black border suddenly started to appear around my phone screen???

Jawwad Ahmed Khan

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Jan 7, 2017
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Just got my Huawei GR3 a month ago but today suddenly, I came back home from college and saw black borders around my phone screen which were never there. Would be really glad if someone could help.
 

Mooserman15

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Dec 20, 2015
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Run an LCD test app. If the issue persists there, try rebooting the phone into safe mode and/or recovery. If the issue still persists, it is a hardware issue. If it is under warranty, get it fixed.
 

belodion

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Jun 10, 2014
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Most phones do not have CRT screens.

If the black bars show up in screenshots, you have a software problem.
If they do not show up in screenshots, you have a hardware problem.

Yes I was thinking of something I read very long ago, about a TV screen image being shrunk as a consequence of too low a voltage.
 

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