You can easily transfer your game progress to another device! 

All you need to do is:

1. Link your game progress to your Google/Game Center (depending on the platform) or Facebook in the game settings.
2. If you linked your game account to Google/Game Center, add the linked Google/Game Center account in the system settings of the second device. If you linked the game account to Facebook, you can proceed right to the next step.
3. Start the game, sign into the corresponding Google/Game Center/Facebook account in the game settings and download your game progress.

Please note that only linking to Facebook will allow you to transfer the game progress between different platforms (Android, iOS)!