IsatPhone Global Prepaid SIM Cards offer 50 to 5000 units of airtime, great rates, no activation fees, and worldwide coverage. With a range of expiry periods to choose from, IsatPhone prepaid cards are ideal for seasonal users of IsatPhone Pro and IsatPhone 2, or anyone on a fixed budget because there are no overage fees.

With an IsatPhone Global Prepaid SIM Card from Roadpost, you’ll enjoy great value and convenient 24/7 access to activate your card or refill your airtime.


Inmarsat logo

Inmarsat Coverage Map

Inmarsat uses three geostationary satellites to provide coverage almost anywhere. Each covers up to one-third of the Earth’s surface, and coverage extends from latitudes* of approximately -82° to 82°.

Inmarsat Coverage Map

IsatPhone Prepaid Terms & Conditions

Hidden costs aren’t fun. We believe in giving you all the details.

  • SIM cards can be activated online within 1 year of purchase
  • The expiry date of your IsatPhone SIM card begins when it is activated or refilled
  • Calls are billed in 30-second increments for the first minute, then in 15-second increments after the first minute. Text/SMS messages are decremented per message
  • Cards can be refilled at the then current retail rate of the card by logging in to your Roadpost online account. When you refill a card, any unused airtime carries forward, the expiry date is automatically extended and you retain your original IsatPhone phone number
  • IsatPhone prepaid card expiry dates are calculated based on the date the refill is applied plus the expiry period for the respective product. Expiry periods are not cumulative except for the IsatPhone Prepaid 30 Day Expiry Extension product which adds 30 days to your existing expiry period. Use your Roadpost online account to extend your expiry date. Please refer to the Burn Rates Table for details
  • Prepaid burn rates are set by the network provider and are subject to change from time to time.
  • Roadpost Standard Terms and Conditions apply

Additional information


Wi-Com’s Two-way Radio rental experts will collaborate with you to better understand your industry and business so we can create a custom plan designed to meet your specific business and financial objectives.