Did a few searches and have read some for the last 2 hours on a few sites. Couldn't find this question answered even though I am guessing it has been asked/answered a ton of times. Sorry for my bad search skills. Thinking of getting my first iphone here. I am currently an ATT customer for wireless (no data). Can I buy an iphone and use my existing ATT SIM....to get all the benefits of an iphone without a data plan? Thanks.