Yes, you can. To restore from a different device, please:
- Open your G Cloud app.
- Tap the menu icon at the upper-left corner.
- Tap the Restore option.
- Tap on the name of the device you wish to restore from its backup.
- Start browsing the content of the backup → Select what to restore by long-press on it → Tap the Restore button.
You can press the Home button and G Cloud will resume restoring in the background.