Chosen Solution
Hi everyone, A friend gave me his “old” iPhone 6 because it has some issues. The main one is than the screen randomly turns off, but the phone is not locked, we can still use the tactile, the phone just shows a black image. Yesterday, i disassembled my phone to check the screen connectors and i noticed two things : The first one is that the screen connectors cover is missingAnd the other is that the battery stickers were badly applied. Indeed, the battery could move a little bit inside the phone. So i change the stickers and the phone ran pretty well for about 3 hours. Then the issues came back … I also have a jack plug issue, none of my headphones work properly with this phone. And sometimes I have an unexpected Siri launching (but i heard it was a common issue with the iphone 6) Thank you all for the replies, and i apologize for my bad english
In some situations, a missing screen retaining bracket can allow the connector to slightly disconnect, which would cause the symptoms you see. However, the most likely scenario is that you have a bad screen. I would look at this guide and then decide if you want to try replacing the screen.
I would expect it to be the screen but in an iPhone of that age I would test the battery as well. A new battery is not just because the old one wont retain charge but also can solve issues that are unexpected and if your iPhone 6 still has the original battery then a new one can only improve lifetime of a a charge as worst case for fitting it so no negatives to trying. In regards to the headphone jack. Does the headset connect fully or does it feel like it wont go all the way in and click. if the lightning jack and main speaker and mic are working it could simply be dust build up. use a pair of ESD safe tweezers to clean out both ports and if you can get isopropyl wipes wrap ones round the end of one of the tweezer points it will help clean the dir out. If you see a lot of dirt come out and the headset jack connects properly then all it was was dirt that was causing that issue. I think we a new battery you may even find the old screen is fine. As for the bracket. The 6 screen cables have a decent length and as long as the housing does not have any bends or twists in it I have never known the metal bracket to do more than be a reassurance. The tracks were introduced because on the iPhone 3 and 3s the Lcd and touch connector would pop off if the phone was dropped. But the 6 was well designed in this regard and is no pressure is there due to bends or twists then the connectors are strong enough even if the phone drops. The fact that the problem was worse with a shield could mean you were using the wrong screws they may look the right size but even 0.01mm difference and it can cause issues. See the guide on fixit for precise screw sizes to use.
