You can link your saved game to your Google Play Games or Game Center account. This will allow you to restore your progress to any device by logging in with the appropriate Google Play games or Game Center account.
To back up your progress
Your progress will be automatically saved to our servers when you play the game while your device is connected to the internet. If you are online and signed into a Google Play Games (Android) or Game Center (iOS) account, this will link your Google Play Games of Game Center login to your Sonic Dash account.
To restore your progress
On your new device, your progress should be automatically restored once you sign into the game with your Google Play Games or Game Center account.
Note: Please be aware that it is not possible to transfer your save data to a different platform (i.e. you can not transfer from an Android device to an iOS device or transfer from an iOS device to an Android device.)