Maybe you are discounting these guys as not being sane, but I just recently found out that Virgin Mobile USA (a Sprint owned MVNO) has recently added a smart ph

Maybe you are discounting these guys as not being sane, but I just recently found out that Virgin Mobile USA (a Sprint owned MVNO) has recently added a smart phone no contract option with an extremely reasonable monthly fee - $25/mo for unlimited* (5.5gb) data, unlimited texts and 300 minutes - and tops out at $60/mo for unlimited minutes. It's far from perfect, though as they don't allow non-VM phones and their only android choice is the decidedly mid/low end samsung intercept (2.1 eclair, evdo rev 0 only) for ~$150-$200 but I still thought it was impressive to see any sizable dataplan for $25 all in. They also offer no contract usb 3g for $40 - $20 less than sprint charged me for years on contract, and $10 less than I recently paid for a verizon backed MVNO no contract usb data plan. They apparently have legendarily bad customer service though. On the subject, does anyone know if there are any high end sprint targeted phones that are exploitable to the point of being able to change whatever UMTS/WCDMA uses for identifying numbers that you might be able to convince a hardware specific MVNO like this to enroll a phone that wasn't their own?