Acer Liquid X2 delete your Google & Gmail account

OS: Android 5.1 (Lollipop)

CPU: Octa-core 1.3 GHz Cortex-A53

Display: 5.5" inc

Camera: 13 MP, Single

Remove a Google account on Acer Liquid X2

You need to delete your Google account from your phone if you are selling the phone to another user and do not want him to get access to your mail or other Google services.

What happens after deleting a Google account?
All data and files will be deleted, including emails, notes 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 the Settings section.
After that, select Accounts and backup.
Click Manage Accounts and delete your account.