Welcome to the Candy Crush Saga Community
Do you have a question or need help with your game? Ask the Community.
@anno45 Hi and welcome, If your game is saved with a King or Facebook account on your old device. All you should need to do on your new device is sign in with the saved game details and your levels should automatically sync. Please note the boosters are stored on the device itself so these will not sync to your new device.
You could back up old device to the cloud and restore on your new device and this can transfer the boosters as well but this is not guaranteed to work every time
Thank you