OneRoam Cruise eSIM Field Test: Connecting Land & Sea

Earlier this year, we wrote about OneRoam and the possibility that this cellular service at sea could change one of cruising’s most ingrained habits: switching a phone to Airplane Mode shortly after boarding.

And during a recent four-night cruise aboard Norwegian Getaway from Miami to the Bahamas, I tested OneRoam, a travel eSIM from Wireless Maritime Services (WMS) designed to provide cellular data both at sea and ashore.

After four days of messaging, browsing, checking maps, using social media, tethering other devices, and running repeated speed tests, my biggest takeaway wasn’t necessarily how fast OneRoam was.

It was how seamless the experience of staying connected felt.

The OneRoam Plan and My Setup

OneRoam provided me with its Global + Cruise Unlimited seven-day plan, which was priced at $89.99 in the app at the time of my test.

The plan provided cellular data both on land and at sea. OneRoam recommends installing the eSIM before travel and activating it at the beginning of your trip.

Before purchasing a plan, make sure your phone is both eSIM-compatible and carrier-unlocked, as OneRoam requires both. On an iPhone, you can check your carrier lock status under Settings > General > About. If your device displays “No SIM restrictions,” it’s unlocked.

For my test, I installed OneRoam on an unlocked iPhone 16 Pro Max and kept it connected to the service throughout the cruise as my primary phone.

The plan I tested was data-only, meaning conventional cellular voice calls and SMS text messaging were not included. Internet-based services such as iMessage and WhatsApp worked through its data connection.

What Could I Actually Do With It?

For most of you, this is probably more useful than the speed numbers.

WhatsApp worked very well. For ordinary messaging, I had little to complain about.

iMessage worked too, although it occasionally behaved strangely. Individual messages sometimes appeared out of order, and photos could be inconsistent. Sometimes an image sent quickly; other times I had to restart the send.

Safari worked well for ordinary browsing. I noticed some latency, but if you’re simply checking websites, news or travel information, you may not find the delay particularly noticeable.

Outlook and iOS Mail worked well. I was able to read emails and keep up with my usual inbox management, including deleting unwanted promotional messages. Attachments were sometimes slow to download, and outgoing emails occasionally stayed in my outbox a little longer than usual, but overall, I was able to handle my everyday email needs.

Facebook and Instagram were also usable. There was sometimes a slight delay, but again, you may barely notice it during normal social media use.

Google Maps was useful at times, including during an early morning run at Great Stirrup Cay. I was able to load Maps and follow my location.

I was also able to use OneRoam as a personal hotspot. I tethered another iPhone 17 Pro Max to the OneRoam-equipped iPhone 16 and connected my MacBook Pro through hotspot and USB-C.

Traveling with me, my mother was also able to connect her iPhone to my iPhone 16 and use its OneRoam data connection when we were together, both on board and ashore. If you’re traveling with family or friends, you can share your OneRoam connection through your phone’s hotspot, provided you’re within range and have a usable cellular connection.

I particularly liked that capability off the ship. Rather than setting up another travel eSIM, my mother could simply use my connection when we were nearby.

Why I Used OneRoam Alongside Ship Wi-Fi

I found that using OneRoam alongside Norwegian Cruise Line’s onboard Wi-Fi gave me the best of both services.

OneRoam handled most of my everyday connectivity, including messaging, browsing, maps and social media. For occasional activities requiring a stronger or more stable connection, such as video calls home, you may prefer to use the ship’s Wi-Fi.

I had purchased NCL’s Free at Sea package, which included 150 complimentary Wi-Fi minutes. I used these minutes selectively rather than relying on them for every message or quick web search. Wi-Fi packages and promotional offers may vary depending on your cruise line, ship and itinerary.

One of the benefits I appreciated most was leaving OneRoam running without worrying about background app updates or consuming a limited data allowance. I could use my phone normally and save my included NCL Wi-Fi minutes for other activities.

Using the two services this way also delivered one of the benefits I had hoped for when I first learned about OneRoam: I stopped thinking about Airplane Mode.

If you’ve cruised before, you’re probably familiar with the routine. Turn on Airplane Mode. Connect to ship Wi-Fi. Disconnect. Reconnect. Check whether cellular data is on. Make sure you aren’t accidentally running up a bill.

I didn’t spend time thinking about that.

My iPhone 16 stayed on OneRoam most of the time. When I wanted to use NCL’s Wi-Fi instead, I simply connected to it, and switched back to OneRoam afterward.

The distinction mattered because the two services opened different doors. OneRoam gave me internet access, but some onboard functions in the NCL app — including reservations and the ship’s digital daily — only worked through Norwegian Getaway’s Wi-Fi network.

That’s one reason I found the two services complementary rather than interchangeable. OneRoam handled most of my everyday connectivity, while the ship’s Wi-Fi still provided access to certain onboard functions. On some cruise lines, those app features may be available over the ship’s local Wi-Fi network without purchasing an internet package.

Where You Stand Matters

I generally had my best cellular service on upper decks, exterior areas and in spaces near windows.

In some interior areas, the connection weakened or disappeared altogether. My stateroom, 13601, was an interior room along an interior corridor on Deck 13. I had little to no usable throughput there.

Yet in Norwegian Getaway’s Deck 6 atrium, where large windows provide views of the ship’s exterior, the connection was good enough for me to tether my MacBook Pro and handle some CruiseNews administrative work.

To better understand these differences, I asked OneRoam about the ship’s cellular infrastructure.

Willie Moore, executive director of OneRoam, explained that Norwegian Getaway is equipped with a distributed antenna system (DAS), with cellular antennas positioned in multiple locations throughout the vessel. According to Moore, all 210-plus ships served by OneRoam have distributed antenna systems, although their configurations vary. Newer shipboard networks have greater antenna density, which can improve coverage in passenger cabins and other interior spaces.

“Because cellular antennas are positioned throughout the interior of the ship, moving closer to an exterior wall or cabin does not necessarily mean getting a better signal,” he added.

It is worth noting that my experience was limited to one sailing aboard Norwegian Getaway, which was launched in 2014. Your results may vary depending on the ship, its cellular infrastructure, and where you spend time on board.

I also noticed brief periods of very slow or no connectivity as Norwegian Getaway approached or departed Great Stirrup Cay and Nassau.

The good news is that OneRoam covers both maritime and land-based cellular data, so you don’t have to worry about additional roaming data charges when your phone switches from the ship’s cellular signal to a land-based one. And this switch is necessary because the ship’s onboard cellular network must be switched off to avoid interfering with land-based cellular networks, which take priority in coastal waters.

As a result, you may experience very slow speeds when the ship is in territorial waters but still far from a land-based cellular tower. The same can happen in reverse when your ship departs port and moves beyond the reach of land-based cellular service before its onboard network is reactivated.

This was the one aspect of OneRoam that I found slightly inconvenient, though brief, during my cruise. Arriving at a port is often an exciting time, when you may be messaging companions, checking maps or coordinating plans ashore. In these situations, my mother and I logged into our Wi-Fi accounts, as well as used the in-room and house phones, to communicate.

Once in port, where OneRoam relied on land-based towers, I generally found the strongest signals on outer decks and in windowed, onboard spaces.

OneRoam Speed Test Results

Before sailing, I activated OneRoam in Miami so I could evaluate how it performed on land.

It worked well, and at times, very well.

One 5G test produced 43.06 Mbps download. Another reached 92.69 Mbps.

Performance varied considerably depending on where I was. Among these representative tests, download speeds ranged from 3.05 Mbps at sea to 92.69 Mbps on land in Miami.

Among the results:

Location / Date	Time	Download	Ping
Miami — Sept. 7	10:44 a.m.	92.69 Mbps	101 ms
At sea — Sept. 7	7:24 p.m.	3.05 Mbps	283 ms
At sea — Sept. 8	12:50 p.m.	4.49 Mbps	157 ms
Great Stirrup Cay — Sept. 9	7:48 a.m.	5.79 Mbps	506 ms
Nassau — Sept. 10	9:11 a.m.	9.34 Mbps	185 ms

Ping measures the time it takes for data to travel from your device to a server and back. You can have respectable download speeds but still notice some lag when your connection takes longer to respond to each request.

These weren’t laboratory tests. They were snapshots taken while traveling, and conditions aboard a moving ship can change quickly.

Additionally, I occasionally used the Speedtest app on a separate iPhone 17 while it was tethered to the OneRoam-equipped iPhone 16, because the app on the 16 frequently could not connect to a test server. Most of my direct measurements came from Speedtest.net through Safari.

Is OneRoam Right for You?

Overall, I enjoyed using OneRoam aboard Norwegian Getaway. Although performance varied depending on my location aboard the ship, the service met my everyday connectivity needs.

I could message friends and family, browse the web, check maps, use social media and share my connection with other devices. Most importantly, I spent far less time thinking about Airplane Mode or worrying about how much data I was consuming.

I can see OneRoam being particularly useful on longer international cruises and itineraries visiting multiple countries or more remote destinations, where you may appreciate having one cellular data plan that works both aboard ship and ashore.

My test was limited to a four-night Bahamas sailing, but the convenience of moving between land and sea without arranging separate data plans is an appealing concept if you’re undertaking a more extensive itinerary.

If you need to make occasional video calls, upload large files or perform other demanding online tasks, I recommend complementing OneRoam with the ship’s Wi-Fi rather than relying exclusively on either service. That combination allows OneRoam to handle your everyday connectivity while keeping another connection available when additional performance is needed, especially if you are cruising a line that offers packaged Wi-Fi time or data limits.

If you prioritize convenience and everyday connectivity over maximum internet speeds, OneRoam offers a practical way to stay connected at sea and ashore in one eSIM plan. Combined with ship Wi-Fi, it gave me the flexibility to use whichever connection suited my needs at the time.

Reader Discount

OneRoam has provided CruiseNews readers with a 15% discount on its data plans. Use code CRUISENEWS15 at OneRoam.com.

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Disclosure: OneRoam provided CruiseNews with a complimentary seven-day Global + Cruise Unlimited plan for this field test. CruiseNews received no payment for this article and receives no commissions or other compensation from OneRoam through the discount code or links in this article. Our findings and opinions are based on independent testing and firsthand experience.