You have bought a secondhand phone and tried to log into it after doing a factory reset but you failed in doing this as your device suddenly shows you the popup “This device was reset. To continue sign in with a Google Account that was previously synced on this device”.
Due to this error prompt you can’t login. Generally, this happens when the previous user hasn’t removed the Google account completely.
Due to this, you can’t access the phone unless you type the correct Google account details.
I know how frustrating this moment can be but you don’t need to panic as this guide will show you a bunch of solutions to remove the error “This Device Was Reset to Continue Sign in with a Google Account”.