Hi, i have an iPhone 4 running on 4.3.3, its unlocked with ultrasnow on T-Mobile USA baseband 1.59, yesterday the phone erased a couple of my contacts, like the names were erased but the numbers were still there on the text app and the favorite side to make a call. After like 2 mins the names were back, not, when i go into contacts XL 4, all my groups keep loosing all the contacts, like the groups appear empty, i put them all in group by group, took me all day, since i have 94 groups then when i close the app and open it again to send mass texts the groups are empty again. Anyone know how to solve this? Try restoring, didnt help, restored from backup, that only fixed it for about 5 mins. Please help me.