This is an important security step to go through whenever you sell off a device or just no longer plan to use it with Google services.
Upgrading your smartphone is a regular habit for many, which makes securing your Google account all the more critical.
The consolidated account tools that Google offers can help you keep track of which devices still have access to your account and kick out those you no longer have in your possession.
To do this, go to My Account. You can also get here from the app grid found in the new tab page of Chrome.
The site is also mobile-friendly if you’re accessing it from a smartphone. Scroll down to Sign-in & security and then go to Recently used devices. Touch Review devices to see what devices have access to your Google account.
Touch on a specific device name if you want to see when it was last synced with your Google account. You’ll see a large Remove button. Press that to take away access.
Note that this doesn’t wipe the device remotely. To do that, you’d need to use Android device manager or do so manually.
Performing this action from time to time is also a good security practice so that you will have total control and visibility over which phones, tablets, and computers are connected to your Google account.
Source:PcWorld.com