My iPhone 5c (which I've learned is a notoriously crappy phone) stopped telling time accurately back before Christmas. The clock is slow, very slow. Like, when I took this screenshot it was not 12:42 pm. When it first started my alarm wouldn't go off and I'd oversleep in the morning. I send time-sensitive text messages and they get logged as 2-3 days old. It is a real problem. And please don't tell me to reset the date and time. I've done this countless times.
I never managed to try to take care of it until after the one-year warranty ran out in February (I know, my fault). I've taken it to the Apple Juice store and they tried everything they know and can't get it to work (and they didn't charge me a penny). I went to Verizon today to buy a new phone (it turns out I can basically trade it in for a Motorola at little cost) but they advised me to call Apple Support to exhaust my options before I gave up on the iPhone. After 18 minutes waiting for a real person, the real person (after getting my IMEI # and realizing I had a crappy 5c) said they could certainly help me and it would only cost $29 to be transferred to a technician. Huh? $29?
I'm heading back to the Verizon store tomorrow. So long iPhone!