1. Android Central Question's Avatar
    Hi, I have a Sony Xperia Z5 (e6653 with android 7.1.1) and it hardly gave me serious problems over the last couple of years, apart from a couple of system freezing it had months ago that the next update fixed.
    Suddenly it begun to have screen glitches, it started with going more and more gray until it's almost impossible to see the screen, and lately it has a serious refresh lag problem, in the sense that the old screen freezes over the new one for a few seconds (so for example, I have a dark screen with pale text and suddenly if I scroll the page, it overlaps with the old portion of page, so I see double lines, one frozen over the one currently scrolling), then the frozen over-image either refreshes away (usually getting the new screen as a over-image), or very slowly fades to red and then disappears leaving only the currently refreshed screen.
    It's a problem that goes on and off, not constant, but I can't find a trigger to it (it happens with many apps in use and with only the home screen with no background apps running; it happens both with the cpu, ram and battery relatively cold, and when they are quite hot; it happens when the phone is charging and not; and both on static screens, videos, black and white pages and colorful ones).
    The phone never fell badly, and didn't fall at all in the weeks leading to this, so I don't think it could be an hardware problem, but I can't find anything like this discussed anywhere else. Can someone please help me understand what's happening and if I have to get a new lcd panel installed or if I can fix it myself?
    Thank you
    02-27-2018 12:18 PM
  2. Rukbat's Avatar
    The phone never fell badly
    There's an old saying in electronics about power tubes which are large, glass and fragile) "You can drop it on a concrete floor, but never drop it on a feather bed". It's the little taps that can cause more damage than the 3 foot falls.

    and didn't fall at all in the weeks leading to this
    And it can take weeks for a tiny crack caused by a fall to spread enough to cause visible problems.

    That said, determining which one is the problem, hardware or software, is something better left to experts. Either one can cause the problems you're describing.

    if I have to get a new lcd panel installed or if I can fix it myself?
    That would be a bad idea - assuming that it was the screen, not a bad connection or bad software. If you've never worked on the inside of a phone before (I don't care if you've worked on electronic gear all your life - even small electronics), you'll probably damage the first few phones you work on - which is why repair shops keep old useless phones. As practice for new technicians. If the phone is worth nothing, it doesn't matter if someone melts the screen i his first attempt to remove it, or tears a cable when he puts the phone back together.

    At least take it to a good repair shop just to get an idea of what a repair would cost. (And beware of sticker shock - a 2-1/2 year old used (but in good condition) phone may be cheaper than what seems like a simple repair. (For example, replacing the microUSB connector on an S5 is about $80 - for a $7 item. A whole decent phone is worth about $85.)
    02-28-2018 02:38 PM

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