Can I still play even while not connected to the internet? No. You will need an internet connection in order to play the game. Related articles How do I save the game? (Mobile version) My save data isn't being displayed when I log in to the mobile version. (Nintendo Switch Ver.) How do I link a Pokémon Trainer Club account? (Smartphone) Can save data that has been linked to only an Apple ID be accessed from an Android device? (Smartphone version) If I uninstall / reinstall the game on the same device, can I login to the original save data?