Asus ROG Phone II ZS660KL delete your Google & Gmail account

OS: Android 9.0 (Pie), ROG UI

CPU: Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485)

Display: 6.59 inches, 106.6 cm²

Battery: Non-removable Li-Po 6000 mAh battery

Remove a Google account on Asus ROG Phone II ZS660KL

If you are going to sell the phone to another user, you must definitely remove the Google account from the phone, otherwise the new user will get access to your mail or other Google services.

What happens after deleting a Google account?
All data and content associated with the account will be erased, including emails, files 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?
Open the Settings section on your phone.
Select the Accounts and backup menu item.
Click Manage Accounts and delete your account.