Their plans are cheap because the coverage sucks.
The fact is t-mobile is too small of a company to really make at&t turn it up a notch. Ironically the only company that can do that is verizon![]()
But T-Mobile is the easiest for Apple to expand to. All it would take is getting to the frequency that T-Mobile uses for 3G, and they're done. No hardware change required, where Verizon would need either a new chipset installed, or a separate phone outright. Neither of which is cost effective to Apple, especially with LTE coming down the pipe.
I'm still waiting for a reason, outside of 'users', that it would be beneficial to Apple to make a CDMA-capable phone, when that technology (and that network) will be gone/made redundant within the next 2 - 3 years.
All of this being outside how bitter VZW is because they laughed Jobs out the door, and his phone is now so successful. They had their chance, and they blew it.
BL.