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IsatPhone Prepaid Reloads - Add prepaid minutes to your SatPhoneCity SIM card

Brand Name:
IsatPhone Pro
0.10 LBS
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Product Description


Special Notice:

As of July 1, 2023 we will be unable to reload airtime on certain GSPS (Inmarsat) SIM cards. We recommend that you send us your SIM serial number via our SIM Check Page and we will reply to you with the details. If you reload without checking we will refund the order and email the details to you as to how you can reload your SIM card.


Instructions to reload your Inmarsat prepaid SIM card:

Your SIM card must have been purchased from SatPhoneCity

     (Inmarsat mandates that reloads can only be carried out by the company that sold the SIM card)

  • Select the number of "units" required from the drop down menu (Note: Expiry periods are shown below)
  • Enter your SIM card serial number in the field above
  • Complete your purchase
  • If you wish to delay the reload activation or have any other comments they can be entered into the "comments" box on the last page of the checkout process


Please Be Aware of the following:

  • Nothing is shipped, your airtime is added to your SIM card electronically.

  • Reloads can take up to 8 hours to complete.

  • In order to assure that your unused minutes carry forward, on plans that allow for this feature, we recommend that your reload be completed a minimum of 48 hours prior to the expiry date.

  • We are not responsible for lost airtime as a result of reloads completed after the above mentioned 48 hour time frame. 

  • Unused minutes will "carry forward" if eligible provided the reload is completed prior to the expiry date. 


  • Please Note:The 400 Unit reload may require a new SIM card. If you have a SatPhoneCity SIM a new card will be provided at no cost if required. We will notify you if this is the case.


Unit Values – Voice – BGAN, GSPS & SPS UNITS
PSTN (Landline) 1.50
Cellular 1.50
Voicemail 1.50
Inmarsat B – voice/fax/2.4 data 2.90
Inmarsat M – voice/fax/2.4 data 2.90
Inmarsat Mini-M – voice/fax/2.4 data 2.50
Inmarsat GAN/Fleet/Swift Voice 2.50
Inmarsat Aero Voice 5.60
Iridium Voice 5.70
Globalstar Voice 5.70
Thuraya Voice 5.80
Other MMS Carriers 8.00
SMS 0.60
Voice - GSPS  
GSPS & SPS (LandPhone, IsatPhone, FleetPhone) 1.50
BGAN, FBB or Swift Broadband 1.50
Minimum Call Durations & Billing Increments   
GSPS & SPS Voice including ISDN 30 seconds then 15 seconds

 *Please Note:

The 400 Unit plan is subject to change if the supplier (Inmarsat) raises wholesale rates. SatPhoneCity reserves the right to pass along any increases from Inmarsat to the end user during the term of this agreement. Any increases will be billed via electronic invoice. In the event that these invoices are not paid your plan will be terminated and any outstanding monies not used by the plan will be refunded.

Product Reviews

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  1. easy to refill

    Posted by Jane Stapleton on 9th Jun 2015

    Simple online process. First time I've used it. Previously called Customer Support which is top notch. Highly recommend Satphone City.

  2. simple isatphone prepaid refill process

    Posted by Unknown on 31st Mar 2015

    Have had our iSatPhone for several years now. Did like the auto-renew feature which is no longer available, but the existing process is simple and our order was processed quickly and correctly. I emailed support once before ordering to clarify renewal options, and received a prompt response. Have been very satisfied with the service and call quality when backpacking in wilderness. For our "emergency" purposes, the 100 unit, 6-month expiry with rollover mins refill works well.

  3. simple Refill Process

    Posted by Steve Ward on 9th Feb 2015

    First time user the satellite phone concept is a bit intimidating This service was easy to use.
    Customer service was very patient and helpful.
    Steve W.
    Hollister, CA

  4. Good value for money

    Posted by Jerry Livson on 2nd Jan 2015

    Really easy to purchase from Sat Phone City

  5. fast, simplicity and perfection

    Posted by winny chan on 11th Aug 2014

    Easy, simple and fast. I am very glad with the service and the equipment.

  6. Fit my satellite phone usage!

    Posted by Unknown on 6th Mar 2013

    The prepaid plans offered here for my isatphone pro fits my usage. On the vessel for 3 months, home for a month or 2, and back at sea. What could be better.

  7. IsatPhone Prepaid Reloads

    Posted by Vaughan Ashby on 5th Nov 2012

    With the change in IsatPhone terms and conditions, the 6 monthly rolling top up system seemed the best idea for $100 + tax for 100 minutes. SatPhoneCity process your renewal every 6 months so you never lose service and your minutes are rolled over if you don't use them. Morover, Chris at SatPhoneCity provided excellent communication and service.

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