This is a very good cell phone and Amazon.com gives the best deal. But, you can't transfer your old phone number from different provider to Cingular through Amazon.com. If you transfer your old phone number, you won't get your mail-in rebate. Please read amazon.com mail-in rebate rules carefully!!!You can read about how to transfer your number through this link : http://www.amazon.com/exec/obidos/tg/feature/-/508597/102-6686881-6992121