google contacts: I lost all the contacts in Google in my Samsung s2 after factory reset. How to get back?

re sign into your google account and sync all when prompted .you will get all your contacts back into your phone .it happened with me also .i synchronized my email account in my android device.& got all the contacts.

You relogin to Google, sign in, a dialogue will appear, that the username or pass word is wrong. Underneath there will be written unable or difficulty in sign? Click on it. Next they can ask you mobile number, or a form will appear, just fill the form, by ticking your problem. You will be back in business with Google, this happens with me several times in a month.

Good Luck Doc, happy hunting, next time don't reset to factory fitting,lol. as the Cookie goes away and Google cannot recognise your device.