Apple today admitted that some iPhone 7 and 7 Plus models running iOS 11.3 or later may have a bug that disables the microphone during phone calls, MacRumors spotted through a leaked document. The few users with the affected devices may see their speaker button grayed-out when making calls or video chatting through FaceTime. The issue seems to only affect phones running that version of iOS or versions after 11.3.
Some users on Reddit and Twitter have reported experiencing such microphone issues in the past few months and the leaked document, sent out to its Apple Authorized Service Providers network, apparently confirms Apple is aware of the problem.
Apple is recommending these tech support workers tell customers to first unpair or turn...
