The time on my phone keeps changing. It will go from being the correct time to 4 hours ahead and then back to the correct time. It also has deleted all of my text messages, including locked ones, multiple times. I have my settings set to not delete messages and the capacity for messages is around 2,000 per conversation. My phone also will not let me send or receive picture messages anymore. I have my settings set to automatically download messages and it did this until about 2 weeks ago. Any suggestions?