Iridium Satellite Phone Post-paid SIM Card Inactive post-paid monthly contract SIM card for all Iridium satellite phones including 9500, 9505, 9505A, 9555, 9575 Extreme, and Iridium Go! Ready to activate on any Iridium post-paid monthly contract service plan of your choice. Airtime is not included and must be purchased separately. Contracts start at $50 per month with 10 inclusive minutes to any landline or mobile (excluding data connections). Activation fee of $25 and 3 month minimum term applies to all contracts Iridium satellite phones allow you to make and receive voice calls and send/receive SMS from anywhere on the globe. No charge for incoming voice calls and text messages. Outgoing calls to any global landline or mobile phone can be made at a flat rate per minute. SIM card can be activated on a future date, simply select your activation date using our online activation request form.