I currently have att service with the high speed data plan and a Samsung BlackJack. I would like to purchase an iphone, activate it and use my existing plan and sim with it. I do plan to make calls and use edge with the iphone. Then, when I need high speed internet I can move the sim back to my blackjack. By using the 1.1.3 downgrade and upgrade break will I be able to achieve all of this? Thanks in advance!
Nigel
Nigel