It sounds like your iPhone 6 boots okay but later it freezes and fades to multiple colored lines on the screen. There's a section in this article for "If you see lines, missing sections, discoloration, or poor image quality" in this article: Get help with the screen on your iPhone, iPad, or iPod touch - Apple Support
Step 1 Download Fone Keeper. To fix green line on iPhone screen, hit any of the buttons compatible with your computer. Then run the installation package and finish all the prompts to install it. Once done, the iOS system recovery tool will launch.All Time: 34,348. I dropped my iPhone 6 recently and it got this strange barred pattern vertical across the screen and a different line intercepting the other horizontally. The areas the lines were located are unresponsive to touch. i had just gotten a cracked screen repaired earlier so i didn't repair it. Then i - iPhone 6. 7. How to Fix iPhone 6 Touch Screen not responding with Restart iPhone. Reboot your iPhone 6/iPhone 6 plus press, and hold the Home and Sleep/Wake button until you the Apple logo appears on the screen. When the device restarts, check if the touch screen is working again. 8.
e) Next choose the option on the same screen, āFactory Resetā. This will update, and clear your whole phone back to factory settings, just like when it was brand new. This has worked many times for me, as a result to resolve a screen from glitching, colored lines on the screen, blank screen, and screen turning off and on.
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