Iridium Post Paid SIM Card Activation Required - OrangePost Paid SIM Card Activation Required Orange Postpaid Iridium Service subscriptions are a great option if you use a satellite phone on a regular basis or for a prolonged span of time. You'll get detailed call records each month and the convenience of uninterrupted service without having to manage usage and airtime online. You'll pay a monthly or annual service fee and you'll get the option to choose from competitive airtime bundles and pooled minutes