Re: Why do i have flickering horizontal lines over half of the scrren on my microsoft lumia 535
Try a Soft Reset. Hold the Volume Down + Power buttons until the phone vibrates and reboots (about 10 seconds). This does not cause any data loss.
If you still have the issue, then do a factory reset. Settings > about > reset your phone. You should see the spinning gears and your phone will reflash the last OS version held in recovery. You do loose data, but get your phone back. Sign into your Microsoft Account and restore your backup during the set up.
This will rule out a software issue. If you still have the flickering lines, it is a hardware issue. Seek warranty or repair.
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