A large number of iPhone 6 and 6 Plus users around the globe have faced this issue with their handsets' displays. The displays reportedly turn unresponsive as a couple of chips which are normally connected to the circuit board detach from it and the longer you use your iPhone, the risk of the chips detaching from the circuit board increases.
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Since Apple doesn't recognise this issue 'officially', you may not be able to get your iPhone replaced but iFixit says that you can get rid of the issue by subjecting your iPhone to a hard reboot. If the problem persists, you can also get the logic board repaired by third party technicians who are good at it.
Apple currently runs a screen repair programme and if your iPhone screen gets damaged, you may end up paying up to £86.44 for an iPhone 6 display and £106.44 for an iPhone 6 Plus if you don't have AppleCare+. However, Apple doesn't take third party repairs kindly and you'll have to be very careful about who to trust to repair your iPhone if you don't want to pay Apple for it.
There's another risk attached to it. If you do get your flickering iPhone display repaired at a third party shop, there's a chance that Apple may simply 'brick' your iPhone. Apple is reportedly 'bricking' iPhones whose Touch ID functions have been repaired or interfered with by any unauthorized phone repair shop. This includes changing an iPhone's display or replacing the home button.
In such a case, the problems for the average iPhone 6 or 6 Plus user gets much more complicated. An iPhone 6 user recently visited an Apple store in the U.S. where he was told that they couldn't do anything about it as Apple doesn’t recognize it as an issue, and advised him to buy a new iPhone instead. According to iFixit, a website known for iPhone teardowns, repairs and hacks, the 'touch disease' gets worse with time and even if you can repair it temporarily, it'll eventually stop working completely.
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'Despite Apple’s white flag, some afflicted users have noticed that strategically twisting the phone a bit or putting pressure on the screen reverses the issue for a while. The gray flickering bar goes away. After a short remission, though, the iPhone illness gets worse. The insidious gray bar of death spreads. Touch functionality gets increasingly glitchier. Eventually, the phone loses touch completely,' said iFixit.
To get around this issue, you'll need to get in touch with expert microsoldering specialists who will be able to remove two touchscreen controller chips inside your affected iPhone and replace them with new ones. According to iFixit, a majority of such specialists are not Apple- authorized repairers, which means that you'll need to make a hard choice- going to a third party specialist or buying a new iPhone.
'The issue is ridiculously widespread and Apple should’ve issued a recall or maybe a free warranty repair on this problem already. If you own an iPhone 6+ and haven’t experienced the problem yet, then I think the chances are pretty high that you’ll experience it during the lifetime of the phone,” said a user to iFixit via e-mail.