I have been having many various mini crashes after the update which I never had before, and I see that many of you have factory reset your phones. I am not very tech savvy, but I see under settings and privacy there is a factory data reset. I also see there is a "back up my data" which backs up current settings and application data. Is this how you back up your phone prior to factory resetting? Are the pics and messages backed up as well as the phone book, and all apps installed , or do all 3rd party apps have to be reinstalled?