Welcome to the Candy Crush Saga Community
Do you have a question or need help with your game? Ask the Community.
Hello @technocandy and welcome to our wonderful King Community. No you should be fine. I would sign in to Facebook with your current device and play a few levels. Then go ahead and sync your game to the new iPhone. Just remember you will probably lose any saved lives and boosters when you transfer your game from your current phone to the new phone. However once you start playing via FB (or a King.com account), your progress and any purchases you may make will be saved on the King servers so they can be restored by customer support if needed.
📱 Moving your progress onto a new device here
Enjoy your new phone. You should have no problems transferring and playing the game on it. I just did this about 4 months ago.