Im about to buy this sidekick off my friend for 50 bucks. Its a sidekick 2. Can i simply remove the sim card from my cell phone to the sidekick without any problems? or do u need a special sim card for a sidekick in order to use stuff on it? i am on a plan with unlimited texting and i hardly ever talk anyway so i figured i'd get a sidekick to talk occasionally and text. would the sim card work the same way? im on a plan with tmobile. any info would help, looked on google a couple pages but nothing like this came up.