Best Satellite Phones for Remote Australia — 2026

Two satellite phone networks are currently active and well-supported in Australia: Iridium and Inmarsat. Understanding the difference between these networks is essential before choosing a device.

Iridium operates a constellation of 66 low-Earth orbit (LEO) satellites that provide broad coverage across most of the globe — check current network coverage maps for your intended area — including polar regions. Because the satellites are in low orbit, call quality is generally good and the handsets are relatively compact. Iridium is the dominant satellite phone network for Australian remote users, with strong dealer support, competitive prepaid plans, and a wide range of compatible handsets. The Iridium 9555 and Iridium Extreme 9575 are the two main handsets available in Australia.

Inmarsat operates geostationary satellites positioned over the equator. The IsatPhone 2 is the primary Inmarsat handset for land-based use. Inmarsat provides good coverage across Australia, but geostationary satellites sit at a fixed point in the sky — in southern Australia, the satellite elevation angle is lower, which can make it harder to obtain a clear signal in areas with obstructions such as trees, cliffs or buildings. Inmarsat coverage does not extend to polar regions. The IsatPhone 2 remains available in Australia, but verify current network status and plan availability with an authorised Australian dealer before purchasing, as Inmarsat's consumer satellite phone service has undergone changes in recent years.

SPOT and Garmin inReach devices are satellite messengers, not satellite phones — they provide two-way text messaging and SOS capability but do not support voice calls. See our separate guide to PLBs and satellite messengers for a comparison of those devices.

The Iridium 9555 is the most widely used satellite phone in Australia. It is a compact, rugged handset with a retractable antenna, a colour display, and a straightforward interface. Key specifications include a talk time of approximately 3.5 hours, a standby time of approximately 30 hours, and an IP54 dust and splash resistance rating. The 9555 supports voice calls, SMS, and basic data (2.4 kbps) for email and tracking applications.

The 9555 is well-suited to 4WD tourers, remote workers and station managers who need reliable voice communication. It is the most affordable Iridium handset and has the widest availability through Australian dealers. Prepaid SIM cards are available from multiple Australian providers, allowing you to purchase airtime in advance without a monthly commitment — useful for seasonal or occasional remote travel. Monthly plans are also available for regular users.

The 9555 is not waterproof — it is splash-resistant only. For marine use or environments where the phone may be exposed to rain or immersion, the Iridium Extreme 9575 is the better choice.

The Iridium Extreme 9575 is the premium Iridium handset, designed for demanding environments. It adds an IP65 waterproof rating (protected against water jets), an integrated GPS receiver, an emergency SOS button with dedicated Iridium Emergency Response Centre support, and a slightly longer battery life than the 9555 (approximately 4 hours talk time, 30 hours standby).

The integrated GPS allows the 9575 to transmit your location when making an emergency call, which significantly improves response times in a rescue situation. The dedicated SOS button connects directly to the Iridium Emergency Response Centre, which coordinates with local emergency services — this is a separate service from the Australian 000 emergency system and from AMSA's JRCC Australia, so understand how the service works before relying on it.

The 9575 is the preferred choice for serious remote touring, marine use, and anyone who may need to use the phone in wet or harsh conditions. The premium over the 9555 is justified for users who will genuinely use the phone in demanding environments. Both handsets use the same Iridium SIM cards and plans.

The Inmarsat IsatPhone 2 is a robust handset with a long battery life (approximately 8 hours talk time, 160 hours standby) and a large, easy-to-read display. It has been widely used by remote workers and station managers in Australia. The IsatPhone 2 operates on Inmarsat's geostationary satellite network, which provides good coverage across mainland Australia.

Important note: Inmarsat's consumer satellite phone services have undergone significant changes. Before purchasing an IsatPhone 2 or any Inmarsat device, verify current network status, plan availability and pricing directly with an authorised Australian Inmarsat dealer. Do not rely on older reviews or pricing information. Confirm that prepaid or postpaid plans are available for your intended use case before committing to a purchase. Second-hand IsatPhone 2 handsets are available, but verify that the device is unlocked and that a current Australian plan can be activated on it before purchasing.

For most new buyers in Australia, Iridium currently offers more straightforward plan availability and dealer support. The IsatPhone 2 may still be a good choice for specific use cases — particularly for users who already have an established Inmarsat account — but verify current service status first.

Satellite phone plans in Australia are available in two main structures: prepaid (pay-as-you-go) and monthly subscription plans.

Prepaid plans allow you to purchase a block of airtime minutes that are valid for a set period — typically 30 days to 12 months depending on the plan. Unused minutes may roll over if you recharge before expiry. Prepaid is well-suited to occasional remote travellers who only need the phone for specific trips. The cost per minute is higher than monthly plans, but there is no ongoing commitment.

Monthly plans provide a set number of included minutes per month for a fixed fee, with additional minutes charged at a per-minute rate. Monthly plans are more cost-effective for regular users — remote workers, station managers and anyone who uses the phone frequently. Some plans include SMS and data allowances.

Australian dealers including Pivotel, Iridium Australia and others offer a range of plans. Compare current pricing directly with dealers, as plan structures and pricing change regularly. Factor in the cost of the handset, the SIM activation fee, and the ongoing plan cost when calculating the total cost of ownership.

Satellite phones can make emergency calls, but it is important to understand how this works and its limitations before relying on a satellite phone as your sole emergency communication device.

On Iridium, dialling 000 from an Australian Iridium SIM will connect to emergency services. However, the call is routed through the satellite network and may not automatically transmit your GPS location to the operator — you must be able to describe your location clearly. The Iridium Extreme 9575's dedicated SOS button connects to the Iridium Emergency Response Centre, which then coordinates with local emergency services, but this is a commercial service, not a direct connection to AMSA or Australian emergency services.

For life-threatening emergencies in remote Australia, a registered 406 MHz PLB remains the well-regarded option for distress alerting — it transmits your GPS position directly to AMSA's JRCC Australia via the Cospas-Sarsat satellite system, with no subscription required and no battery to charge before use (PLBs have a sealed, non-rechargeable battery with a minimum 5-year life). A satellite phone complements a PLB for day-to-day communication but does not replace it for emergency distress alerting. See our PLB vs Satellite Messenger guide for a detailed comparison.

Always ensure your satellite phone has sufficient battery charge before entering remote areas. Carry a spare battery or a solar charging solution for extended trips.

A satellite phone is the right choice when you need reliable two-way voice communication from remote areas without mobile coverage. The primary use cases in Australia are:

Remote workers and station managers who need to make and receive calls regularly from properties beyond mobile coverage. A satellite phone provides the most natural communication experience — voice calls work the same way as a regular phone.

4WD tourers and overlanders on extended remote trips where regular check-ins with family or emergency contacts are important. A satellite phone allows you to call for help, report your position, or simply let people know you are safe.

Boaters and fishers operating offshore beyond VHF radio range. Note that EPIRB carriage requirements for offshore vessels are separate from satellite phone requirements — a satellite phone does not replace a registered EPIRB for vessels required to carry one.

Isolated properties and homesteads where mobile coverage is unavailable and a landline is impractical.

For users who primarily need emergency SOS capability and occasional two-way text messaging rather than voice calls, a Garmin inReach satellite messenger may be a more cost-effective option. See our PLB vs Satellite Messenger guide for a comparison.