If you have already registered a mobile-pocket account your cards are saved in it. You can log into mobile-pocket on your new smartphone with the same credentials and use all your cards without any problems. If you have not registered an account yet, please send us 3 or 4 barcode numbers and names of cards you have saved in mobile-pocket. We will help you to find your cards and transfer them to an account; with this you can log into the app on your new smartphone.