iPhone 5 time and date issues
So, I activated my vzw iPhone5 Saturday. Very much enjoying it. Woke up yesterday and was very confused because my phone thought it was 8/26/12 and 30 minutes later than the actual time. I reset network settings and it self resolved...until this morning. I woke up and looked at my phone and had a melt down because my alarm never went off. I hurriedly got ready and looked at the microwave as I ran out, and it was 30 minutes earlier than my iPhone said.
My iPhone apparently is doing something weird and reverting to 8/26/12 + 30 minutes while I (and it) sleep. It throws off iMessage and I'm sure the rest of the date/time dependent apps, so I've turned off the automatic time setting for now, and its fine now (so far lol). But I would like to know what the real issue is if possible!?! Is it my phone? VZW? Does it matter?
Thanks in advance :0)
iPhone 5, iOS 6