Iridium SIM cards start with zero balance and validity.  Choose the option appropriate for your needs and you can then extend at a later date if you need to - SIM card validity can be extended by purchasing another prepaid voucher or 30-day extension before the original expiry date. To keep your satellite phone operational, you need to have airtime credits, and this is where Iridium Sat Phone Top-Ups come into play. Top Up your Iridium Phone is a straightforward process. You can purchase airtime vouchers or top-up cards online or from authorized dealers.

If the validity is not extended then your SIM card will expire and become unusable. Any minutes remaining will be lost and your SIM will enter a 270 day grace period in which you may reactivate the SIM by adding a new voucher, however the original balance will be lost and will not be added to the new balance. Iridium Sat Phone Top-Ups, you can conveniently add airtime to your satellite phone, ensuring it's always ready when you need it.

After this 270 day period has ended the SIM will automatically deactivate meaning that you will need to purchase a new Iridium airtime SIM Card and pre-paid voucher.  Reactivating a deactivated card incurs the Reactivation Only charge below plus the cost of a new airtime voucher. Whether you're an outdoor enthusiast, a mariner, a scientist conducting research, or a professional in the field, a well-topped-up Iridium satellite phone is your lifeline to the world.

If you did not originally purchase your SIM card from Orbital SatCom we will be unable to add credit to your card. However, Inmarsat SIM cards are free of charge so why not order a SIM card from us as well?