Lenovo A850 delete your Google & Gmail account

OS: Android 4.2.2 (Jelly Bean)

CPU: Quad-core 1.3 GHz Cortex-A7

Display: 5.5" inc

Camera: 5 MP, Single

Remove a Google account on Lenovo A850

If you are going to sell your old phone, you definitely need to delete your google account from your phone so that the new user cannot access your google profile and cause problems with google services.

What happens after deleting a Google account?
All data and content associated with the account will be erased, including emails, files, calendars, and photos.
You won't be able to use Google services that require you to sign in to your Google account (such as Gmail, Drive, Google Play or Calendar).
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?
Go to Settings on your phone.
Select Accounts and backup.
Click Manage Accounts and delete your account.