What This Product Is Used For
This Inmarsat prepaid SIM card is designed to provide voice and SMS services for compatible Inmarsat IsatPhone 2 and IsatPhone Pro satellite phones, making it a flexible option for users who want short term prepaid access rather than a long contract.
It includes 100 units of airtime valid for 90 days from activation, which equates to approximately 67 outgoing voice minutes based on the published unit rates. The SIM allows outgoing calls and SMS, while incoming voice calls and text messages are not charged.
In practical terms, it is used for remote travel, offshore work, expeditions and emergency backup communication where Inmarsat satellite coverage is available.
Who This Product Is Best Suited To
This SIM is best suited to users who already own an Inmarsat IsatPhone 2 or IsatPhone Pro and want a short term prepaid plan with clear validity.
It works well for project based travel, seasonal trips or emergency preparedness where a 90 day window is sufficient. It is also suitable for users who prefer the cost control of prepaid units rather than a monthly subscription.
If you operate within the Inmarsat coverage footprint and want a defined validity period, this is a practical choice.
Pros and Cons
Pros
Prepaid structure gives clear cost control over a defined 90 day period
No charge for incoming voice calls and text messages
Can be activated on a chosen future date
Compatible with popular Inmarsat IsatPhone models
Cons
Validity limited to 90 days unless extended with additional credit
Coverage is not global and excludes polar regions
Unit based charging requires monitoring usage
Real World Performance and Day to Day Use
Once activated, the SIM enables voice calls and SMS messaging through your compatible Inmarsat handset. Outgoing voice calls are charged at 1.5 units per minute, while outgoing SMS messages are charged at 0.60 units each.
Incoming voice calls and text messages do not consume units, which can be useful if you expect others to initiate contact. With 100 units available, you have approximately 67 minutes of outgoing call time under standard rates.
The SIM can be activated on a future date through an online activation request, allowing you to align activation with your travel plans rather than starting the validity immediately.
As with all satellite services, a clear view of the sky improves signal quality and call stability.
Why We Like This Product
From the YPC Team perspective, this SIM is a sensible short term solution for Inmarsat users who do not need year round service.
A common mistake is activating a SIM too early and losing part of the validity before travel begins. The ability to select an activation date helps avoid that issue. It also provides predictable unit burn rates, making budgeting easier for short expeditions or contracts.
Comparisons With Similar Systems
Compared with longer validity prepaid SIMs, this 90 day option is better suited to short term projects. Choose this if your trip fits within that window. Choose a longer validity SIM if you require extended availability.
Compared with global Iridium based SIM cards, Inmarsat coverage is regional and does not include the polar regions. Choose this if you operate within Inmarsat coverage. Choose a global network if you need connectivity everywhere on Earth.
Compared with postpaid satellite plans, this prepaid SIM offers fixed unit control. Choose prepaid for defined short term use. Choose postpaid for ongoing continuous service.
Alternatives Worth Considering
If you need coverage in polar regions or truly global connectivity, a different satellite network may be more appropriate.
If you require more minutes or a longer validity period, consider a higher unit prepaid SIM or a contract plan.
Tips for Getting the Best Performance
Select your activation date carefully so that your 90 day validity aligns with your travel schedule.
Monitor unit usage during calls and SMS so you can manage remaining credit effectively.
Ensure your handset firmware and battery are in good condition before departure.
Use the phone outdoors with a clear view of the sky for the most stable connection.
Full Technical Specification
Product Type Prepaid satellite SIM card
Network Inmarsat satellite network
Airtime 100 units
Validity 90 days from activation
Voice Rate 1.5 units per outgoing minute
SMS Rate 0.60 units per outgoing SMS
Incoming Charges No charge for incoming voice calls and text messages
Compatibility Inmarsat IsatPhone 2 and IsatPhone Pro
Activation Online activation with selectable future date
Box Contents Inmarsat prepaid SIM card activation instructions
Buyer’s Guide
Buy this if you own an Inmarsat IsatPhone 2 or Pro and need a short term 90 day prepaid solution with clear unit pricing.
Do not buy this if you require true global coverage including polar regions or need service beyond 90 days without topping up.
Frequently Asked Questions
How many minutes do 100 units provide?
At a rate of 1.5 units per outgoing minute, 100 units provide approximately 67 minutes of voice calling.
Are incoming calls charged?
No, incoming voice calls and text messages do not consume units.
How long is the SIM valid for?
It is valid for 90 days from the chosen activation date.
Can I choose when to activate the SIM?
Yes, you can select a future activation date through the online activation process.
Which phones does this SIM work with?
It is compatible with Inmarsat IsatPhone 2 and IsatPhone Pro satellite phones.
Does it support SMS messaging?
Yes, outgoing SMS messages are supported and charged at 0.60 units per message.
Does it work worldwide?
It works within the Inmarsat coverage area, which does not include the polar regions.
Can I extend the validity?
Validity can be extended by adding additional prepaid credit before expiry.
Is there a monthly fee?
No, this is a prepaid SIM with no ongoing monthly contract.
Who is this best for?
It is best for Inmarsat phone users who need short term prepaid satellite service with predictable costs.
Looking for more options?
Browse our full range of Satellite Phones for other great choices to suit your space, goals, and budget.
