Complete Autonomy on Runs and at Sea: How I Connected Roamless eSIM to My Samsung Galaxy Watch Ultra
Today, LTE-enabled smartwatches with eSIM are nothing new. However, when it comes to actually connecting them, the process turns out to be far from simple—and in most cases, expensive and impractical.
Living in Spain, I go for an 11-kilometer run every morning. I only take my smartwatch on my wrist and wireless earbuds in my ears (not even the charging case). Naturally, dragging a bulky smartphone along during a run or a swim in the sea is both uncomfortable and senseless.
Over time, though, an uneasy thought kept creeping in: the moment I step out the door, I am completely out of touch. In this day and age, just the feeling of being unreachable even for half an hour causes mild anxiety for many people. And here I was—spending an hour running and swimming in the sea, completely cut off from messaging apps and family contacts. It was genuinely frustrating.
I had been considering connecting my smartwatch to an eSIM for a long time. When I acquired the Samsung Galaxy Watch Ultra, I decided to solve this issue once and for all.
Major Pitfalls with Mobile Carriers in Spain and Ukraine
My very first attempts to connect the watch to mobile data ended in failure. I stumbled upon a harsh reality: not all mobile operators support eSIM for smartwatches (MultiSIM / OneNumber technology).
- Limited Operator Support: In Spain (as well as in Ukraine), only major tier-1 carriers (such as Movistar, Vodafone, and Orange) offer profile sharing or duplication for smartwatches.
- Additional Monthly Fees: This feature almost always comes as a separate paid add-on—costing anywhere from €5 to €10 per month on top of your main plan.
- Issues with MVNOs: I use a standard, affordable carrier, DIGI, which fully covers my daily needs. However, they simply do not offer eSIM support for smartwatches.
I didn’t want to switch my primary operator, pay triple the price, or lock myself into contract commitments just to have connection on a watch that I would use for maybe 2–3 hours a day.
I began exploring alternatives, sifting through different workarounds, forums, and rate plans. Eventually, I discovered Roamless.
What Is Roamless and Why Is It Perfect for Smartwatches?
Roamless is an innovative global eSIM provider that operates on a Pay-As-You-Go model (you pay only for the data you actually use).
Key Advantages of Roamless:
- No Monthly Subscription: You don’t pay every month. You top up, say, €10–15, it converts into a data balance, and it only expires as you consume it. If you go for 3 runs a month and use 50 MB, you are charged pennies.
- Coverage in 150+ Countries: You get a single eSIM profile that automatically connects to the best local cell towers in Spain, Ukraine, the US, or anywhere worldwide during voyages and travel.
- Data-Only Connection (No Phone Number Needed): Roamless provides data only. In 2026, a traditional phone number for a smartwatch is completely unnecessary. All essential communication—voice calls, audio clips, and text messages—has long shifted to Telegram, WhatsApp, Signal, and Viber.
- Unified Balance: A single account and balance can be shared across multiple devices.
It provides total peace of mind: you are always connected without wasting a single extra euro.
How I Set Up Roamless on My Samsung Galaxy Watch Ultra in Minutes
The setup process turned out to be straightforward, though it has a couple of nuances. Here is the step-by-step guide that works seamlessly:
Step 1: Preparing the QR Code on Your Smartphone
- Download and open the Roamless app on your primary Android smartphone.
- Go to the “Data” tab and select the eSIM installation option.
- Instead of automatic installation on your phone, choose the “Use QR Code” method.
- Take a screenshot of the QR code and display it on a second screen (laptop, tablet, or another phone) so you can scan it easily.
Step 2: Adding the Profile to Galaxy Watch Ultra
- Make sure your watch is connected to your smartphone via Bluetooth, with active Wi-Fi on both devices.
- Open the Samsung Galaxy Wearable app on your phone.
- Navigate to: Watch settings ➡️ Mobile plans.
- Tap “Add plan” / “Use code”.
- Your phone’s camera scanner will activate—point it at the prepared Roamless QR code.
- Confirm adding the profile and wait 2–3 minutes for the profile to finish downloading to the watch.
Step 3: Enabling Data Roaming on the Watch (Crucial Step!)
Since Roamless is an international virtual operator, mobile data will not function without data roaming enabled:
- On your Galaxy Watch Ultra, open Settings (gear icon).
- Go to Connections ➡️ Mobile networks.
- Set Mobile networks to “Auto” or “Always on”.
- Make sure to turn ON the “Data roaming” toggle.
Done! Now, whenever your watch disconnects from Bluetooth, it automatically grabs the Roamless mobile network.
$5 Starter Bonus and Registration
You can download the official Roamless application directly from the app store via this link: 👉 Download the Roamless App
🎁 Special Bonus: Enter promo code TDV6PGOX during registration to instantly receive a $5 bonus on your balance for free. This data allowance will last you for months of autonomous runs and walks with your smartwatch!
Personal Takeaways & Family Usage
After experiencing the convenience of Roamless on my smartwatch, I onboarded my entire family onto the system.
It is especially convenient for my school-age son. He doesn’t need to carry an expensive smartphone to school, where it could be a distraction or get lost. With Roamless active on his watch, he stays in touch with me on Telegram and WhatsApp, allowing me to message him or check his location at any time.
Roamless is one of those technological conveniences that, once you try it, makes you wonder how you ever managed without it. I highly recommend giving it a try!