Once you install GCloud on your new device and sign in to your account, GCloud will detect that this is a new device, and it will ask you to select from one of the following options:

  1. Replace Device
  2. Add New Device

If you select the first option, GCloud will combine the backup of the older device and this new one into one device. You can view all the backed-up data from the older device and the new device under the new device’s name in the Restore tab. (Learn more)