We each have TnT 1200 plan on iphone 4. We saw nTelos which is a regional provider but I believe has national coverage that I believe uses their own network/towers in our area but roams on sprint if...
Straight Talk's throttle is also lower than GoPhone's... like what you told me. 90 Kbps or something around that.
Sorry for the typos but yes aio was great but not with cricket
Sprint I phones can only be unlocked for international use. Verizon iphones can be used though.
I loved Aio. They had CS based here in the states.