Microphone doesnt work in loudspeaker mode (after screen replacement?)
I work in a small shop and two guys came in with two iPhone 6 plus:es, both with broken screens. We replaced them with the same type of parts, and some time later they came back and both of them had microphones that didn't work in loudspeaker mode. It definitely felt like a software issue so I went ahead to Reset All Settings on both of them, and both got stuck on the Apple logo with progress bar at the very beginning of the reset, so now I had to do a complete data reset on both.
They didn't speak our language very well, which makes this a bit more complicated, but I think I could discern that they both had updated recently, to 9.1 i presume. Any ideas why this occurred? Hardware or software? Our replacement parts has worked great so far so the exact same problems occurring on two phones at the same time is weird.
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