Double check that you used the same account information and password that was in the phone before you reset it. If you didn't remove your google account before you reset it it won't accept anything else. Only by reentering the same account and password can you get in. Once you get in, then you can delete the old one and/or add another. This is to protect against a thief accessing your data. I believe if you can proove ownership the manufacturer can, but I don't know for certain on an LG, some manufacturers will/can, some not,. so check with them. If you simply don't remember the information contact the manufacturer for advice; if you bought it from an individual ask them to unlock it and delete their account. If they cannot and cannot proove their ownership too,. chances are it is stolen, report it to the police and turn it in, it can probably be located by the owner and that could be problematic. It IS possible someone else here can give you better advice, but to the best of my knowledge this is correct. Have you tried logging in to your account on a pc and recovering your information that way? As in lost password/ can't remember etc.? Note: changing the informtion won't help. If you use a pc and have saved your login info, say on firefox, you can find your account and password in the security settings, saved logins, show password. You can possibly recover your information by following the appropriate instructions on [link|https://support.google.com/accounts/answer/7682439?hl=en|this page|new_window=true] if you remember you e mail address, or password, or phone number.