Help me unlock my g1

Hello,
The best solution is to call your carrier and ask for your unlock code "WHICH IS FREE" if you are more then 90 days with them, they usually give you the codewith in 5 - 10 business days.
Or you can order one online and get it within 5 - 10 minutes and key inthe code, it takes less then 30 seconds to unlock it yourself.
You can get one for $18 from here

Hi. If your contact is older then 90 days contact T-Mobile and they will give you unlock code. If you can not get the code from T-Mobile you have to use 3rd party unlock codes sellers like http://www.fastgsm.com/en/htc/t-mobile/t-mobile-g1/network-unlock-code

get a gmail acount

Well to unlock your G1 most people would say try factory reset. I would recommend that first. If it dosent work try calling tmobile or your service provider for your G1. From there if your service provider cant help they will probabley send you to the android department, or just call android directly. Hope this will help you with your problom