I am on T-Mobile, have an excellent plan. $79 per month for full unlimited everything, minutes, texts, and data. Their service has been good for me in Chicago. I had ATT few years ago, had spotty coverage around town, and they were very expensive at the time. Just wondering how the unlocked iPhone4's work in the real world on T-Mobile in the U.S. ? I know you only get Edge network right ? But for me that might be ok, when in car I just use phone to talk, and text a bit when stopped. But for any web surfing or downloading, that would be done at Home, Office, or friends house, which all have nice WiFi setups, so as long as the iPhone4 has good network chip in it, to fins the WiFi and hold a good signal, that would be great. FYI, recent phones have been the Nexus-One and Nexus-S Let me know please.