A low orbiting satellite that provides service to a satellite phone network

The Ultimate Guide to Satellite Phones for Emergencies in 2024

by Jay Speakman

Imagine you are on an adventure in the middle of nowhere, with no cell towers, no Wi-fi, or phone signals. However, while it is just you and the wilderness, something unexpected happens. Your regular phone is useless now, and should the ‘unexpected’ be an emergency, you have no way of contacting someone for help. 

If you have a satellite phone, you don't need to imagine such a scenario.

In 2024, satellite phones will become the go-to device for staying connected when traditional networks fail. So, if you are trekking through remote areas, sailing through treacherous waters, or just sitting by a lake, understanding how satellite phones work and which models are the best can be a lifesaver. 

This guide will take a no-nonsense approach to explaining everything you need to know about satellite phones so you can understand the what, who, and how of a good satellite phone.

Table of Contents

  • 01

    What is a Satellite Phone, and How Does it Work?

  • 02

    Key Features of Satellite Phones

  • 03

    Top Satellite Phone Models: Iridium 9555 vs. Inmarsat IsatPhone 2

  • 04

    How to Choose the Best Satellite Phones for Global Travel

  • 05

    Understanding Global Coverage and SOS

  • 06

    Monthly Plan vs. Phone Rentals

  • 07

    How to Set Up and Activate Your Satellite Phone

  • 08

    Comparing Service Plans and Airtime Options for Satellite Phones

  • 09

    Comparing Iridium with Inmarsat

  • 010

    What is the Iridium GO! and How Does it Enhance Satellite Internet?

  • 011

    Conclusion

  • 012

    Frequently Asked Questions

A hiker struggling to get cell service in a remote location

What is a Satellite Phone, and How Does it Work?

So, what exactly is a satellite phone? Unlike your everyday smartphone that connects to cell towers, a sat phone links directly to a network of satellites orbiting Earth. These phones are designed to work anywhere on the planet, regardless of whether or not there is a cellular network nearby.

Understanding Satellite Communication

Think of satellite communication as a relay system. When you call on a satellite phone, your voice signal travels from the phone to a satellite orbiting above, which then beams it down to a ground station. This can also be used to send a SMS. The ground station then redirects the call to the recipient, either through another satellite or a regular phone network. It is almost like having a direct line to space, which is pretty cool.

How a Satellite Network Functions

Satellite networks can be geostationary (staying in one spot relative to the Earth) or low Earth orbit (LEO), which moves around the planet. Geostationary satellites, like those used by Inmarsat or Thuraya, hover over the equator and cover less areas. LEO satellites, like those in an Iridium satellite network, circle the Earth quickly and offer global coverage, including in the North and South Poles.

Key Features of Satellite Phones

Satellite phones, like the Globalstar models, are designed for reliability with long battery life and robust, durable construction. So, when you are looking for one, here are the key features you should look for:

  • An SOS button that provides instant access to emergency services by sending your location to the right people during a crisis

  • GPS tracking, which allows real-time location sharing for search and rescue operations

  • Global coverage to communicate from anywhere on Earth, especially remote and isolated locations

  • Voice and data services like voice calls, messaging, and data to keep you connected off-grid.

Though the design might not win any awards, when you are stuck in the middle of nowhere, you will be glad these features will work for you.

Top Satellite Phone Models: Iridium 9555 vs. Inmarsat IsatPhone 2

When choosing a satellite phone, two models often stand out: the Iridium 9555 and the Inmarsat IsatPhone 2. Both of them are solid options but they have different strengths that make them stand out.

Overview of Iridium 9555

The Iridium 9555 is often described as the gold standard in satellite phones, and for good reason. It is designed for those who require dependable devices in challenging environments, such as explorers in polar regions, maritime workers on ships, military personnel in remote operations, and emergency responders in disaster zones. This is what makes it stand out:

  • Coverage is nearly global, including polar regions

  • It is durable and capable of operating in extreme conditions, with water, dust, and shock resistance

  • The Iridium satellite phone has an exceptional battery life, with a 4-hour talk time and 30 hours of standby

  • The Iridium network connects to 66 LEO satellites

Benefits of Inmarsat IsatPhone 2

The Inmarsat IsatPhone 2 is the type of device you do not think about until you need it, and when you do, it is truly a lifesaver. It is designed to work where other, traditional networks do not, and its reach extends off-grid, so you are reachable no matter your location. Here are the benefits of getting this satellite phone:

  • IsatPhone 2 keeps you connected almost anywhere on the planet, save for the polar regions

  • It is dust-proof, water-resistant, and can work in extreme temperatures

  • It has an extended battery life of up to 8 hours of talk times and 160-hour standby

  • It has an emergency SOS button which sends your location to emergency services

This phone is tough and dependable, and it is there when you need it most or are going off the grid.

Comparing Iridium 9555 Satellite Phone and Inmarsat

When comparing the Iridium 9555 and the Inmarsat IsatPhone 2, the choice mainly depends on your specific needs, such as coverage, durability, and features. Certain options, like push-to-talk (PTT) aren't available on these devices, but Iridium and Inmarsat both sell dedicated phones for group communications, like the Iridium extreme®.

Here is how these two satellite phones stack against each other:

FEATURE

IRIDIUM 9555

INMARSAT ISATPHONE 2

Coverage

True global coverage, including polar regions

Near-global coverage, excluding polar regions

Durability

Rugged design, water-resistant, shock resistant

IP65-rated, dust, water, and shock-resistant

Battery Life

Up to 4 hours of talk time, 30 hours of standby

Up to 8 hours talk time, 160 hours standby

Emergency Features

No dedicated SOS button

Dedicated SOS button with GPR location transmission

Voice and Data

Reliable for voice calls and basic messaging

Good voice quality, massaging, and basic email

Best for

Users who want full global coverage

Users who need longer battery life and basic emergency features

As you can see, each phone excels in different areas, so understanding your priorities will help you make the right decision about your satellite phone.

A person struggling with cell service in a desolate road

How to Choose the Best Satellite Phones for Global Travel

When venturing into areas with little to no reception, a reliable satellite phone is one of the most essential gear you can pack. So, whether you trek through the mountains, go sailing, or explore unchartered territories, with the right accessories, a satellite phone is your lifeline. But with the options you have, how can you choose the best for yourself? Here, we break down the key considerations to help you decide which device will be most dependable for your adventure.

There are a few important things that you must consider when you are investing in a good satellite phone, and here they are:

Coverage

Consider where you will be traveling. For true global coverage, including polar regions, a phone that operates on a Low Earth Orbit (LEO) network like Iridium is ideal. A geostationary satellite network like Inmarsat might be sufficient for most regions outside the poles.

Durability

Your satellite phone should be rugged enough to survive harsh environments. Look for water or dust resistance, shock proofing, and a wide operating temperature range.

Battery Life

Choose a phone with a long battery life, with at least 8 hours of talk time and several days of standby. This is important for extended trips where recharging might not be possible. 

SOS and GPS Features

An integrated SOS button is important in emergencies, as it allows you to send your location to emergency services. Built-in GPS is also invaluable for navigation and location tracking.

Understanding Global Coverage and SOS

When choosing your satellite phone, one of the most important things to consider is the coverage, and the second is its safety features. Satellite phones include different networks, which determine how reliable they are when connecting. Additionally, an integrated SOS feature will give you an immediate way to call for help. So, let us see why these two things are important for off-grid exploration.

LEO vs. GEO Networks

LEO satellites orbit the Earth at lower altitudes, typically around 1,200 miles or less. This proximity lets LEO satellites like those used in the Iridium satellite communications network provide lower latency, meaning faster communication with fewer delays. LEO satellites are practical for real-time applications and work well even in challenging terrain, such as mountains or valleys.

However, because LEO satellites move rapidly around the Earth, they require a large constellation for continuous coverage. This is ideal for global coverage, including remote and polar regions.

On the other hand, GEO satellites operate at a much higher altitude of about 22,236 miles above the Earth, remaining stationary to provide consistent coverage across broad areas, making them perfect for stable communication like broadcasting or consistent connectivity in mid-latitude regions. However, GEO satellites can experience higher latency due to the distance the signal must travel, which can be less ideal for applications where quick, real-time responses are needed.

SOS Feature

The SOS feature on a satellite handset is designed for situations where immediate assistance is required. When activated, the SOS button sends your GPS location to pre-configured emergency contacts or rescue services. This feature is essential for traveling to distant or dangerous areas where traditional emergency services are unavailable. So, if you are lost, injured, or facing any other type of emergency, an SOS feature can be the difference between getting timely help or being stranded without support.

By understanding these key aspects of satellite phones, you can choose one that best supports your global travels.

Monthly Plan vs. Phone Rentals

When deciding between monthly plans or renting a satellite phone, you must consider the duration of your need, the frequency of use, and your budget. Here is what you must think about:

Monthly Plans

Opting for a monthly plan works best if you need regular access to a satellite phone, whether for work or frequent travel to remote locations. Monthly plans often come with lower per-minute costs, making them more economical for long-term use. Additionally, if you purchase a satellite phone, a monthly plan means you always have service ready when needed. The option is best suited for those who need a satellite phone as a constant part of their toolkit, such as professionals working in remote locations or frequent global travelers.

Phone Rentals

Renting a handheld satellite phone is a cost-effective option, especially if your need is short-term. For instance, renting can save you the upfront cost of purchasing a satellite phone if you are going on a one-off adventure, participating in a temporary project, or preparing for an emergency like a natural disaster. 

Rental agreements also include features like free shipping, pre-configured devices, and, in some cases, no required deposit, making it a hassle-free solution for temporary needs. This option also lets you try out different models and features before committing to one, which is perfect if you are still deciding on the best satellite phone for you.

So basically, a monthly plan is perfect for ongoing use, while a rented satellite phone is best for short-term and infrequent needs, as it is flexible without a long-term commitment.

Phones in the table

Source : Envato

How to Set Up and Activate Your Satellite Phone

Setting up your satellite phone for the first time might seem overwhelming, but it is a straightforward process. No matter the use, setting it up and running involves a few key steps. These include:

  1. Installing the SIM card

  2. Activating the service plan

  3. Checking if the phone connects to a satellite network

Just follow these three steps to get your device ready to provide reliable communication wherever you need it.

Installing the SIM Card in Your Satellite Phone

Installing the SIM card is the first step to going truly global and to stay connected anywhere in the world. This tiny chip, provided by your service provider, connects your phone to its satellite network, ensuring seamless cellular service, even in remote regions. To install the SIM card, disassemble the phone, locate its slot on the phone, make sure it is positioned correctly, and then secure it in place. Once installed, you must reassemble your phone and power it on. It is just as simple as inserting a SIM card into a regular phone.

satellite phone with sim card


Source : Envato

Activating Airtime and Service Plans

Once your SIM card is installed, the next step is to activate your airtime and service plan. This process typically means you have to contact your satellite phone service provider or visit their website to register your SIM card, then select a service plan that fits your needs. Here, you will need to input your SIM card number and a few personal information to complete the activation. Depending on the provider, you may also have to choose between prepaid plans, monthly contracts, or pay-as-you-so services. Activation is usually instant, but sometimes, it might take a few minutes for your satellite phone to go live.

Initial Satellite Connectivity Steps

After the activation, the final step is to connect your phone to the network. This process will make your phone ready to use. Here are the steps to establish this connection:

  1. Go outside to a clear area with an unobstructed view of the sky, avoiding trees, buildings, and metallic objects.

  2. Fully extend the antenna, pointing it upwards.

  3. Turn on the phone and wait for it to connect to the satellite.

  4. Check signal bars.

  5. Test by making a call or sending a text.

With these steps, you can ensure your satellite phone works and functions as it should, especially before going into areas where communication is important.

satellite phone with no signal

Source : Envato

Comparing Service Plans and Airtime Options for Satellite Phones

Understanding the various service plans is important when selecting a satellite phone. Regardless of how often you travel, you can find the perfect fit by comparing monthly, prepaid, and pay-as-you-go options. Let's take a closer look at these plans.

Understanding Monthly Plans

Monthly plans for satellite phones are subscription-based services that provide a set number of minutes or data each month. These are popular among users who need consistent and reliable communication, especially in remote areas. 

Monthly plans ensure your devices are always active and eliminate the need for frequent charges. They are perfect for travelers or professionals who rely on steady communication, as they offer predictability and budgeting ease, with benefits like rollover minutes or discounted rates.

Prepaid vs. Pay-as-You-Go Airtime

Users see benefits and drawbacks in both prepaid and pay-as-you-go airtime. To see which option fits you, you can read their comparison below:


FEATURES

PREPAID AIRTIME

PAY-AS-YOU-GO AIRTIME

Cost Structure

Prepaid for a set amount of minutes

Pay only for the minutes or data that you use

Usage Flexibility

Fixed airtime, usually set with a validity period

Highly flexible, buy airtime as needed

Budget Control

Suitable for fixed budgets, costs are known upfront

No upfront cost and expenses can be predictable

Expiration

Minutes expire after a specific period - [e.g. 30 days or six months]

Doesn’t expire; purchase as needed

Per Minute Rate

Lower per-minute rate

Higher rates when compared to prepaid options

Activation

Requires purchase and activation before use

Activated when minutes are purchased

Ideal for

Users who estimate their needs over a set period

Occasional users who want flexibility without commitment


How Does Iridium Coverage Differ from Other Networks?

Iridium’s satellite network is renowned for its global coverage, reliable communication, data speeds, and more. This sets it apart from networks like Inmarsat, which focuses on mid-latitude regions with limited or no coverage near the poles. We can have a closer look at Iridium and how it compares to other networks.

Pros

  • Global coverage
  • Low latency
  • Portable equipment

Cons

  • Higher costs
  • Signal challenges

Final Comparison: Iridium with Inmarsat


Feature

Iridium

Inmarsat

Signal Stability

More variable, especially near the equator

Generally stable but prone to issues near poles

Voice Quality

Reliable but may experience disturbances

Higher consistency in call quality

Emergency Services

Available globally

Available but limited in North and South poles

Weather Impact

Less affected by weather because of LEO

Can be impacted by severe weather

Accessories

Wide range of portable accessories

Specialized, more extensive accessories are available

Customer Support

Focused on global expedition support

Strong support for maritime and aviation industries

Service Flexibility

More flexible, multiple service plans

Rigid, tied to specific industries


What is the Iridium GO! and How Does it Enhance Satellite Internet?

The Iridium GO! Is a portable device that turns your smartphone into a satellite phone, letting you call, text, and use low-speed data services globally. It improves satellite internet by providing connectivity where traditional networks cannot, making it ideal for various users who work in remote locations.

Conclusion

In remote locations where traditional networks are unreliable, satellite phones provide communication. Choosing the appropriate device and plan is important, whether you are a prepper, expert, or explorer. You can get the solution that best suits your needs from the above-mentioned options. Additionally, check out MIRA Safety’s protective gear to further improve your safety and readiness so you remain vigilant, stay connected, and be ready for anything.

Frequently Asked Questions

How much is a satellite phone?
How to get a satellite phone?
Should I go with a prepaid or monthly plan?
What is the difference between an American and a non-American-made phone?
How durable are satellite phones?