The app is intended for customers who have bought a SIM card from Telefonica and wish to use it on their smartphone. After downloading and installing the app, you just need to have the ID card of the customer and the desired SIM card.

After scanning the ID card with the barcode, you will be guided step-by-step through the registration of the ID card. You can find the data that you need to register in a simple way. The data that is available for the customer at the time of registration is displayed. It includes the phone number, e-mail address, and the login to the service.

You will be guided on how to proceed to the next step. If you need to type in any information, you can do it in the input field of the app. You will be informed about any errors that you have made and how you can correct them.