I remember well the first time I switched my 2 yr expired contract to pay go because I liked the phone and not the bundle. I paid $50 so I would have a phone when I traveled. it didn't work. The jerk who lied to me laughed. I never used AT&T services again. Now I have a reconditioned LG GSM Tracfone with Windows that works well and fits blind-deaf needs. If you don't live on a cell phone it is a very good deal.
Neither Sprint, Verizon, T-Mobile, nor AT&T, work particularly well in US Cellular areas with no towers. None work very well in mountains, or where there is no service - not even 911. There are many of these areas in rural America.
Mac: No windows, No Gates, Apple inside