So, I really want the samsung captivate for at&t, but sadly I cannot because of web charges and other things. But someone told me that if I even put my sim card (for at&t) into a smart phone, they will automatically charge me for an activation fee. Is this true for androids as well? Because the samsung captivate is an android phone. Also, if I buy the phone off of craigslist will at&t be able to detect that i am using an android phone without internet and charge me for it? Thanks.