Firstly, you need to go to this website. If you are signed in, this will work instantly; however, if you are not, you will have to sign in to your email using Gmail or another service. Once you’re signed in, you can see all of the devices linked to your account. If you see anything suspicious, you can click on it to see more information about the device model, the browser used, and the last time and place it was linked to your account. If you wish to remove access, you can click on the small red button labeled “REMOVE.” Google will then inquire if you wish to remove access. If you confirm by clicking “remove,” the access will be revoked. Additionally, if you wish to delete all information from this phone, you may click on the Android Device Manager. If there’s a chance someone has control of your account, you can change your password using the “Secure Your Account” option.
