Google G1 service plan?

hey sorry if this question has already been answered but I couldnt find it...I just bought a G1 off eBay because I didn't want to extend my t-mobile contract...currently I am using a sidekick. Is it going to be possible to just swap sim cards seeing has I have the sidekick plan right now with unlimited texts and data, or do I have to call t-mobile or something to switch to a G1 plan? thanks!

AFAIK this has not been answered yet. I would wait tell around 10-22 to find answers. This phone wont be out tell then. Make sure you read the auction close on your phone also. I am willing to bet it says it will not be shipped tell 10-23.

i have no idea... the phones data plan is more then sidekicks though right?

how much did you get the G1 phone for?

YOU CAN USE a sidekick sim card with a sidekick plan on the G1 with LIMITED 3G service.
To get full 3G you must enable the G1 3g service!