For coverage in Oklahoma, AT&T is hard to beat, but Verizon is closing the gap. New s3 looks like a good choice for functionality, but Apple has the most apps.
If you spend a lot of time outdoors or in bright sunlight you may not like the smart phones...the displays do not get bright enough for easy use, especially the phone. If I had to do it over I'd get a conventional flip phone and a tablet or pad.I am going to get a new "smartphone".
please feel free to post/vote more! your input is vital to my decision! I feel that I get a bunch of dropped calls from ATT. I have an Iphone 3gs for personal use and a sony ericson android on verizon for business. I want a device that makes phone calls and is a good smartphone. not very impressed with the iphone 3gs so far