So I am getting rid of the ally for a Motorola Defy. I am planning on making the old ally work on Page Plus network and was wondering if before I give someone the phone, can I wipe the sd card, wipe the data/cache and have all of my personal info be removed from the phone? Or is there any data hidden with my personal info stored? The guy I want to give it to knows alot about computers and if he has a way I'm sure he would steal my passwords. He buys a lot of used phones, and knows all the ins and outs. I don't want him to get any of my personal info. Thanks.