Chosen Solution
So i bought an iPhone 6 and when i try turning it on it is showing the apple logo for 1 second and than instantly gets black. If i turn it on and hold the power button it shows the apple logo for 3 seconds And now, i did hold home button and power button it showed the apple logo for like3 seconds and than it showed those gray vertical lines see the picture Anyone knows what that could be?
here is the picture with the gray lines Update
Tried the screen on another iPhone 6 it is also showing gray lines see picture
The display cable is damaged, you will need to get another screen to fix that. For the instant black thing, plug the phone into computer and open up either iTunes or 3UTools. It’s probably in DFU mode, iTunes will say recovery mode but it is most likely in DFU mode if you check via 3UTools. 3u.com is where you can download 3UTools.
