Oppo A57 delete your Google & Gmail account

OS: Android 6 (Marshmallow); ColorOS 3

CPU: Octa-core 1.4 GHz Cortex-A53

Display: 5.2" inc

Camera: 13 MP, Single

Remove a Google account on Oppo A57

You need to remove your Google account from your phone if you give the phone to another person and do not want him to get access to your profile settings, your mail or other Google services.

What happens after deleting a Google account?
All data and content will be deleted, including emails, files, and photos.
You won't be able to access Google services that require an account (such as Gmail, Drive, Calendar, or Google Play).
You will lose access to subscriptions and content purchased through this account on Google Play and YouTube (for example, applications, games, music, TV series).

How do I remove a Google account from my phone?
Open the Settings app.
Now, select the Accounts and backup menu item.
Select Manage accounts and select the account to delete.