My wife asked me to buy her a new phone yesterday as hers was on its last legs. She wanted something inexpensive, durable and iPhone if possible. I was able to get a very good condition 5C for a good price. She has now been using it for a few hours and we discovered that the time only works properly when the phone screen is on. After much research I couldn't find anything that shows that Apple fixed the issue. Any help would be much appreciated.