If you already have a Teleboy SIM card but have not yet booked a subscription, go to https://teleboy.ch/mobile to take out a new mobile subscription.
If you follow the steps in the subscription process, you can enter the ICCID number (SIM number) of the card during the order process.
What is the ICCID number?
The ICCID number is used to uniquely identify SIM cards. The 20-digit number is located on the SIM card.