What is the best way to go for privacy concerns? I am NOT rooted and only had phone (HTC Aria) for a week. There is speck of dust or something under the screen which is bugging me and also the phone force closes while texting in landscape mode. Thus, I am wanting to return it for a new Aria. I have downloaded a few Apps, have a few pictures and the phone is synced to my Google, Facebook, Twitter, Yahoo! and other accounts. Do I need to do anything before returning the phone or will Best Buy wipe it themselves?