WWhy is there a thick transparent blue line randomly scanning across then back on my iPhone 6 screen? it usually happens about 30 secs after I finish using or doing anything on my phone. More to the point, why and what is it doing?!?
iPhone 6, iOS 8.4.1, null
Hello there Anth's,
It sounds like you have an anomalous blue line that goes across the screen on your phone. We should be able to isolate that to software or hardware, by first quitting all the running apps:
1. Press the Home button two times quickly. You'll see small previews of your recently used apps.
2. Swipe left to find the app you want to close.
3. Swipe up on the app's preview to close it.
When you have done that restart the device and test the issue again:
iOS: Turning off and on (restarting) and resetting
If the issue persists, backup your device to iTunes, then restore it as new and verify that it works.
How to erase your iOS device and then set it up as a new device or restore it from backups
If it does, then restore your backup to either verify it still works and the software just needed reinstalled, or isolate the issue to the backup file itself.
If after all that you are having the same issue then I would have to recommend you seek service for your phone:
Thank you for using Apple Support Communities.
Why is there a big transparent blue line randomly scanning back and forth on my iPhone 6 screen?? Or more to the point WHAT IS it doing?!?
