Originally Posted by catalin245
I try connect Wifi and 3g , but i have same problem (Wifi low semnal...) I don't know my mobile data is enable and yes, i have data in my tariff (unlimited). Youtube, Facebook, Google (search) , all work , but i can't log on to G-mail
Gmail uses your google account, so if you have your phone connected to your google account it should sync automatically, you might want to check your google account is set to sync automatically.
Is it paticularly saying its not logging in, check market and other gapps, if it logs in it must be a sync problem.