I was given a brand new Sumvision tablet which I wanted to donate to a charity I work for, however before doing so I thought I'd have a little play on it and one of the things I did was to sign in to my gmail account. I now find it automatically displays my inbox and I can find no way to remove my account.
I had a similar problem. Trying out a tablet and used my Gmail account. I didn't want to delete the actual email account and the only way I found to remove it from the tablet was to restore it to factory settings. Trouble was it restored to Chinese but, luckily, I had two of these tablets so I could follow the path to change languages from the other tablet.
Yes but didn't have a lot installed. Went to settings, backup and reset, and factory data reset. It changed to Chinese, as I said, and would have had trouble finding Language and input, under 'Personal' and change language if I didn't have another one, so beware.
Hmm, not sure I want to risk that yet.
How about this:
1, On my PC, change Gmail password (and not login again on tablet) - saw this on another forum but thought it might still leave my address on the tablet, so:
2, On my PC, create another (dummy) Gmail account.
3, Add this account to the tablet (and make it the 'master' account?).
4, From this, delete the original account.
5, On my PC, delete the dummy account.
If apps preinstalled then they will still be there as factory reset. Go through setting, take photos with a digital camera of all steps as it will help, to remind you, of where Language and input, under 'Personal' and change language links are. Titles the same in Chinese (different characters) and the links are still the same place but you will need a reference so use a camera first to go through the steps. Make sure images are readable before you attempt a restore.