Your progress is saved on your phone and backed up online. For now, the online backup belongs to the phone you play on. Signing in with Google Play Games or Apple, so your progress follows you to a new phone, is coming in an update.
Until then
- Keep playing on your current phone if you can.
- If you've already moved, contact us with the Player ID from both phones, and we'll help move your progress across.
Don't delete the game from your old phone until your progress has been moved.