You can add multiple Google accounts on your Android device. However, it considers the first account you sign in with as the default and uses it to sign you in across various Google apps and services.

Setting up Yahoo email on your Android device is a similar process. You can add your Yahoo Mail account through Yahoo's app ...

A default Google account on your Android smartphone is the one that syncs with your Google services, such as Google Drive, Gmail, and Google Photos. Changing this account can help streamline ...