WEST U.S. -- T Mobile's OUT - Will AT&T be IN?

If I am not mistaken, if you want in on an AT&T monthly plan (but not a GoPhone), a credit check is still required (doesn't hurt to ask). Even if you brung in your own device. Don't know why that's done.

I have used a smartphone on a GoPhone plan; although voice and texting worked fine, web surfing was a pain... apparently, GoPhone SIMS have throttled data speed. I was only getting GPRS/EDGE speeds (anywhere between 15 and 100K) despite being in a 3G area. Coverage worked fine for me since I am in an AT&T coverage area. If you stay within AT&T coverage area, I wouldn't sweat the coverage for voice/text. An altrernative coild be Straight Talk smartphones. They're $200 and have a $45 plan requirement. The Phones are Nokia E71 and 6290. The screens are only 2.4" The phones are pictured below. E71 is on the left and 6790 on the right

If Verizon is a viable option, you could try them. They have monthly prepaid plans, phone pricing is sky high ($350 for the HTC Incredible, $400 for a Samsung Fascinate or the Motorola Droid X. Plans are $5 additional to the Verizon postpaid plans.

An add on line to your account works best if you maintain TOTAL control (or you trust the user) and the other user requires little to no hand holding. IMO.

 

Although it would be separated by line of service, I'm pretty certain that if you add an additional line of service to your account, you will receive the one and only billing statement. You'd be responsible for paying at&t, and then you would just have to collect from her.

 

I believe it is because while you pay for the routine monthly service fees in advance on a post paid plan, there can be charges that are in arrears - such as international usage, overages, PPU features, etc.