I am going to upgrade my daughter's cell phone, and she would like a Tmobile Sidekick. At the store, you have to buy it with internet, but I'm not paying the extra money, so my daughter asked if we could just get her one of off ebay. The tmobile guys at the store said the phone gets messed up without internet (deletes contacts, drops call, ect...) So i was wondering if this is true? Does anybody have a sidekick without internet that works?