To log out of a default Gmail account, log out of all the already logged-in accounts. Then log into the one you want to be the default. The first one you log into is always marked as “default.” ...

To remotely sign out of your Google account, Google advises you to follow these steps: Log in to your Gmail account at gmail.com. Tap your profile icon in the top right of your screen. Select “Manage ...

If you want to log out of your Gmail account on an iPhone, it's not as simple as clicking a button. Here’s how to log out of a Gmail account on your iPhone.