LG Wireless Phone

with ATT does your sim card only hold phone# or does it have all your account info?

By account info i mean if i want to use my friends data plan from his iphone for my blackjack 2

Public Comments

1. It holds your account info, contacts if you choose to save it to sim and other similar things can be saved to sim. Pretty much the service of AT&T for one particular person is in that little card. So you can't use his data plan, on your phone. Because in order to do that you would have to put in his sim card, and then AT&T would recongize he's switched to a BlackJack and it would be like same customer, plan etc on a different phone.
2. Sim cards only hold contacts and sometimes text messages. It does not hold all your account info.