Please follow the below steps:
1. Please restart the game and see if this solves the problem.
2. The loss of connection may be caused by an unstable network. We recommend you switch the Wi-Fi network or data network, and confirm that mobile data is switched on and try again.
3. Go to Settings>Apps>See All Apps. Find the game app and go to Storage & Cache to clear the cache, and then restart the game.
4. If the above methods don't work, we recommend you uninstall the game and reinstall it.
If the issue persists, contact the Nothing Support Team for further assistance.