i bought an unlocked sidekick slide that was unlocked for at&t yesterday. my only concern is that when i get this phone in the mail, what will happen after i put my sim card in and turn it on, if it is already unlocked? will they ask for a code, or password, i dont think my sim has a password or anything. also, what services will i be able to use on the sidekick considering i dont have t-mobile. i know i will be able to text and receive calls, can i make calls as well?