Isatphone prepaid sim cards
Isatphone prepaid sim cards

IsatPhone 100-5000 Unit Prepaid SIM Cards

As Low As $155.00
In stock

IsatPhone Global Prepaid SIM Cards offer 100 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.

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Manage Airtime Online

Manage Your Prepaid Airtime Online!

Hassle-free prepaid. Your Roadpost online account offers convenient, real-time access to:

Activate your card(s) in seconds, 24/7!

Refill prepaid airtime if your balance is low or nearing expiry. Or select the convenient auto-refill option in your online account*

Extend the expiry date of unused airtime*

Receive alerts via email or text when airtime balance is low or nearing expiry

Coverage Map

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°.

Learn more about Inmarsat Network
Inmarsat Coverage Map

Detailed Terms

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.
  • *Please note the IsatPhone Global 50 Unit Prepaid Card and Refill products are a promotional offer and are available for a limited time only, while quantities last. The IsatPhone Global 50 Unit Card and Refill must be activated prior to July 17, 2024. After this date, it will no longer be possible to purchase, activate or refill.
  • 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

Airtime Burn Rates

IsatPhone Prepaid Airtime Burn Rates

IsatPhone Prepaid Cards 100 - 5000 Units
Landline/cellular FREE
SMS/Text messages FREE
Landline/cellular/voicemail 1.5 units
Other IsatPhone 1.5 units
Text messages 0.6 units/msg
Tracking text messages 0.04 units/msg
Other Inmarsat 2.9 units
Iridium voice 12.7 units
Thuraya 5.8 units
Other satellite networks 8.0 units