Ok, I need some help or advise. I had a first gen iphone I had jailbreaked to use as a pay as you go phone with ATT. I then I had gotten a 3G iphone from an ad on craigslist. The 3G was on 2.2 and was jailbreaked as well. It came with a Gevey 3G sim. The phone worked on edge but it used up my alotted time very quickly. I decided to update the iphone to 3.0 and jailbreak and unlock it for T-mobile, getting the Sidekick plan to use. I jailbreaked the iphone with redsnow and everything seemed to go smoothly. But when I put the T-Mobile simcard in the 3G, it says invalid sim. When I put the gevey in with it it says no sim installed. The ATT sim shows edge and 3G but will not get on the internet. I can't get on my wifi to run ultrasnow, but could this be the problem? I really don't want the high cost of ATT's monthly service. What do you guys think is the problem. The T-mobile sim and the ATT sim both work in the first gen iphone, and I can get the sims to work on the phones for calls but not internet. Any help would be appreciated.