i stay in USA and i want to setup samsung galaxy tab 7.0 plus mobile phone setting. I think to use the AT&T SIM into this mobile phone. In usa i think this is best. I already use this Dell Streak 7 4G with this AT&T and now want to use the similar sim card for this mobile phone. If anyone knows any kind of setup or any thing related to this phone and AT&T, then please share such valuable information for this smartphone. Thanks in advance for any such information.