Bernina Express Connectivity: Can You Use Data on the Train?

Yes, you can use mobile data on the Bernina Express, though connectivity fluctuates significantly as the train traverses 55 tunnels and 196 bridges. For the most reliable experience during this high-altitude journey, travelers should use a regional eSIM that connects to Switzerland’s leading networks like Sunrise and Salt.

The Reality of Alpine Connectivity

The Bernina Express is arguably the most beautiful train journey in the world, stretching from the glaciers of Switzerland to the palms of Italy. However, the very geography that makes the route spectacular—towering peaks, deep valleys, and thick granite tunnels—is a nightmare for cellular signals.

Network Coverage: Sunrise and Salt

In Switzerland, the primary carriers providing infrastructure along the Rhaetian Railway tracks are Sunrise and Salt. Both offer robust 5G and 4G/LTE coverage in urban hubs like Chur, St. Moritz, and Poschiavo. When you see plans for Switzerland, you are tapping into these high-speed networks.

However, as the train climbs toward Ospizio Bernina, the highest point at 2,253 meters above sea level, the signal often drops to 3G or disappears entirely for short bursts. The many tunnels act as Faraday cages, blocking external signals. While the train cars are designed with signal-enhancing glass to help, don't expect a seamless 4K streaming experience for the entire four-hour duration.

Border Crossings and Italy

One of the biggest hurdles for international travelers is the transition from Switzerland to Italy. The Bernina Express ends in Tirano, Italy. If you are using a standard US carrier pass, you might experience a lag or high roaming charges the moment you cross the border. Using a regional eSIM for seamless border crossings in EU ensures that your phone automatically switches from Swiss towers to Italian ones without you having to swap physical SIM cards or adjust settings.

Comparing Connectivity Options

For American and international travelers, there are three main ways to stay connected on the Bernina Express.

Feature	US Carrier Roaming	Local Physical SIM	EuroHop eSIM
Cost	High ($10/day avg)	Moderate	Low/Competitive
Convenience	Automatic	Requires finding a shop	Instant QR Code
Coverage	Varies by partner	Single country only	30+ countries (inc. CH/UK)
Network	Deprioritized	Local speeds	Sunrise/Salt 5G
Phone Number	Keep your own	New local number	Data only (No number)

Major US providers often charge $10 per day for international passes. For a 15-day European tour, that adds $150 to your travel budget. EuroHop eSIM provides a more surgical approach, allowing you to pay only for the data you need while maintaining access to your original number for iMessage and WhatsApp calls.

Data Needs for the Bernina Express

How much data should you prepare for? Your consumption depends on how you plan to share the journey.

• Social Media Sharing: Uploading high-resolution videos to Instagram Stories or TikTok is the fastest way to burn through data. A single 30-second 4K video can consume 100MB to 200MB.
• Navigation and Logistics: Keeping an eye on the SBB (Swiss Federal Railways) app or Google Maps uses very little data—roughly 5MB to 10MB per hour.
• Researching Destinations: Looking up the history of the Landwasser Viaduct or finding a restaurant in Tirano is relatively light on data usage.
• Communication: WhatsApp calls and messaging are highly efficient. Since EuroHop eSIM plans are data-only, you can use these apps to stay in touch without needing a local phone number.

If you plan on heavy sharing, the 10GB or 20GB 30-day plans are popular choices for multi-week tours. For those just needing maps and occasional messaging, a 3GB or 5GB plan is usually sufficient. You can see plans to find the specific volume that fits your itinerary.

How to Set Up Your eSIM for the Journey

To ensure you have data the moment you land in Zurich or arrive at the Chur train station, it is best to install your eSIM before you leave home or at the airport using the terminal Wi-Fi. First, ensure your device is on the list of compatible phones.

Installation on iPhone

1. Go to Settings > Cellular.
2. Tap Add eSIM.
3. Select Use QR Code and scan the code provided by EuroHop eSIM.
4. Label the new plan as "Travel" or "Europe."
5. Set your "Cellular Data" to use the new eSIM, but keep your "Default Voice Line" as your primary SIM to receive incoming texts (be aware of roaming fees for SMS from your home carrier).

Installation on Android

1. Go to Settings > Network & Internet.
2. Tap the + or SIMs.
3. Select Download a SIM instead?
4. Scan the QR code.
5. Ensure Mobile Data and Roaming are toggled 'On' for the new eSIM profile.

For a more detailed breakdown of the activation process, you can read our guide on how the setup works.

Connectivity Tips for the Rhaetian Railway

1. Download Offline Maps: Before boarding in Chur or St. Moritz, download the offline area for the Graubünden region in Google Maps. This ensures you can always see your location even in the deepest tunnels.
2. Seat Reservations: Unlike regional trains, the Bernina Express (the panoramic carriages) requires a reservation. If you haven't booked yours yet, check out our Eurail seat reservations guide for tips on securing a window seat.
3. Use the Infotainment System: The Bernina Express often has an onboard Wi-Fi network that provides access to a digital travel guide and route map, but this usually does not provide external internet access for browsing. Use your eSIM for your personal connectivity and the onboard system for route facts.
4. Battery Management: Searching for signal in mountainous areas drains phone batteries faster than usual. Bring a power bank, although most modern Bernina Express carriages do have power outlets.

Why One QR Code Matters for Euro-Trippers

Most travelers riding the Bernina Express aren't just visiting Switzerland. They are likely coming from London, heading to Lake Como, or continuing through the Alps to Austria. The beauty of the EuroHop eSIM is that one single QR code covers 30+ countries, including the UK and Switzerland (which are often excluded from standard EU roaming plans). This eliminates the need to buy a different SIM card every time you cross a border on your Eurail pass.

The bottom line

While the Bernina Express route has its share of dead zones due to the extreme Alpine terrain, you can stay mostly connected by using an eSIM that utilizes the Sunrise and Salt networks. By bypassing expensive US carrier daily passes and opting for a flexible data-only plan, you can share every viaduct and glacier view in real-time without the fear of a massive bill waiting for you at home.