HTC EVO Design 4G delete your Google & Gmail account

OS: Android 2.3.4 (Gingerbread), upgradable to 4.0 (Ice Cream Sandwich); Sense UI 3

CPU: 1.2 GHz Scorpion

Display: 4" inc

Camera: 5 MP, Single

Remove a Google account on HTC EVO Design 4G

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 content associated with the account will be erased, including emails, files and photos.
You won't be able to use 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?
Go to the Settings section.
Select the Accounts and backup menu item.
Select Manage accounts and delete your account.