[grej]

I actually had this issue show up on an iPhone6 right after the warranty period expired. I had phone support multiple times and took it in two different Apple Stores and they acted like they'd never seen the issue before. They eventually gave up (after a myriad of other fixes they had us try that didn't work) and said we'd have to get a new phone.

Luckily, we had insurance on it, but it was still a $99 deductible. It's very frustrating to learn that this problem is quite a lot more common than they let on.

[robg]

Likely affects every 6+ so they are trying to get by without a recall unless there's some user handling that's the cause. Luckily in Apple store my swap was under warranty and they tried to run tests, but didn't seem successful so they are largely trusting customers. First swap took about 30 mins, second took 15 mins. They are clearly aware it could affect some phones, but they didn't come right out and say it. They just acted as if they've heard the problem many times before.

[whatok]

My wife had the issue, it stopped for a while, and then popped up again right after the warranty ran out. She needed a replacement ASAP (otherwise I would have shopped it around at multiple stores) and they refused to acknowledge that it was a known defect.