Staying connected in Switzerland makes everything from navigating train stations to checking mountain weather much easier—but international roaming fees can add up quickly. During my Switzerland trip, I tried two different eSIMs, one I loved and one I didn’t so much! In this guide, I’ll share why I think Holafly is one of the best eSIMs for Switzerland, how well it worked throughout my trip, what it costs, and whether it’s the right choice for you.

disclaimer: this post was done in partnership with holafly (you can use my code DANIELLEOUTDOORS for a discount), and does contain affiliate links 

Quick Review: Best eSIM for Switzerland

Holafly is one of the best eSIMs for Switzerland, especially if you want unlimited data without worrying about how much you’re using throughout your trip. I used Holafly during my own Switzerland trip and found it convenient for navigating cities, checking Swiss train schedules, monitoring mountain weather and staying connected while traveling between destinations. I did use Airalo as well, but found I loved Holafly a lot more.

You can purchase and install your eSIM before leaving home, then activate it when you arrive in Switzerland. This means you won’t need to visit a phone store, swap out your physical SIM card or risk unexpected international roaming charges.

• 📱 Best overall: Holafly Switzerland eSIM
• 🛜 Data: Unlimited
• 📅 Plan length: Choose the exact number of days you need
• ✈️ Best for: Multi-city trips, navigation and frequent data use
• ⚡ Setup: Purchase and install before your trip
• ⚠️ Before purchasing: Make sure your phone is unlocked and eSIM-compatible

📱 Stay Connected Throughout Your Trip

Most out of country destinations will require an e-sim if you want to stay connected, which is so important for navigating public transportation, finding food options, and planning epic adventures!

Use code DANIELLEOUTDOORS to save on your Holafly eSIM before your trip.

Unlimited vs. Limited-Data eSIMs for Switzerland

Hi, I’m Danielle — an Arizona-based outdoor creator who has personally explored every destination I write about. I’ve been hiking and adventuring across the Southwest since 2020 and started this blog to share honest, firsthand guides so you can skip the guesswork! I’m also obsessed with coffee. 🙂

I also just wanted to say thank you for supporting a real creator’s work over just an AI summary.

My Experience Using Holafly in Switzerland

I used Holafly throughout my Switzerland trip while traveling between Zurich, Grindelwald and Zermatt. Having unlimited data was especially helpful because I frequently relied on my phone for directions, train schedules, weather forecasts and researching places to eat and things to do.

Instead of tracking my data usage or searching for public Wi-Fi, I could use my phone normally throughout the trip. This was particularly valuable on travel days when I needed to check connections for train travel, platform numbers and last-minute schedule changes.

Coverage in Zurich

I had reliable service throughout Zurich and was able to use maps, public transportation apps, messaging and social media without an issue. As Switzerland’s largest city, Zurich generally has strong cellular coverage, making it easy to start using the eSIM as soon as I arrived. I would have NOT been able to travel around the country without an eSIM. Check out my post Things To Do in Zurich next.

Coverage in Grindelwald and the Jungfrau Region

Holafly also kept me connected while staying in Grindelwald and exploring the Jungfrau Region. I used my data to check mountain conditions, weather forecasts, transportation schedules and attraction information before heading out each day. This area is so fun!! Read my post Things To Do in Grindelwald next.

Service can naturally become less consistent in remote mountainous areas, tunnels and at higher elevations, but I remained connected in Grindelwald and around the region’s main villages and attractions.

Coverage in Zermatt

In Zermatt, I used Holafly for walking directions, restaurant searches, train information and checking the weather before heading into the mountains. Having data was particularly useful because conditions around the Matterhorn can change quickly, so I could check forecasts and live webcams before making plans. Read my post Things To Do in Zermatt next.

zermatt, switzerland at night in the winter 🙂

Holafly Switzerland eSIM Plans and Pricing

Holafly lets you select the exact number of days you need coverage rather than choosing from a few fixed plan lengths. Plans are available for trips lasting between 1 and 90 days, and your coverage begins when the eSIM connects to a supported network in Switzerland—not when you purchase or install it.

Every Switzerland plan includes unlimited data with access to 5G, 4G or LTE where available. Prices vary based on trip length, with longer plans generally costing less per day.

Holafly connects to the Salt Mobile, Sunrise and Swisscom networks in Switzerland. The plan also allows you to share up to 1 GB of data per day through your phone’s hotspot, which can be helpful when traveling with a laptop or another device.

Keep in mind that this is a data-only eSIM, so it does not include a Swiss phone number, traditional calls or SMS messages. You can still use internet-based apps such as WhatsApp, FaceTime and iMessage while keeping your usual accounts and contacts.

Holafly also includes its Always On benefit, which provides 1 GB of backup data every month in more than 150 countries as long as you keep the eSIM installed. For most Switzerland trips, however, the main advantage is knowing the total cost upfront and not needing to purchase additional data during your vacation.

Based on all of this, I feel that Holafly is the best eSIM for Switzerland!!

FAQs: Best eSIM for Switzerland

Can I use an eSIM in Switzerland?

Yes, Switzerland supports eSIM technology, and an eSIM is one of the easiest ways for international visitors to access mobile data. Your phone must be unlocked and eSIM-compatible, so check your device before purchasing a plan.

Does Holafly work in Switzerland?

Yes, Holafly works in Switzerland by connecting to the Salt Mobile, Sunrise and Swisscom networks. It offers access to 5G, 4G or LTE depending on your location, phone and available network coverage.

Does Holafly work in the Swiss Alps?

Holafly works in popular destinations throughout the Swiss Alps, including mountain towns and major tourist areas. However, coverage may be weaker in remote valleys, tunnels and high-elevation areas. This is normal for cellular service in mountainous regions, regardless of your eSIM provider. It worked for us in mountain towns!!

Is Holafly’s Switzerland data actually unlimited?

Holafly’s Switzerland eSIM includes unlimited data for the duration of your plan, so you won’t need to purchase additional gigabytes. However, local carriers may temporarily reduce speeds under their Fair Usage Policy after unusually heavy data consumption. According to Holafly, any temporary restriction should reset the following day.

Can I make phone calls with a Switzerland eSIM?

Holafly’s Switzerland eSIM is data-only and does not include a local phone number, traditional calls or SMS messages. You can still make calls and send messages through data-based apps such as WhatsApp, FaceTime, Facebook Messenger and iMessage.

Can I keep my regular phone number while using Holafly?

Yes. On a dual-SIM phone, you can keep your regular SIM active while using Holafly for cellular data. Be careful when making calls or receiving text messages through your regular carrier because it may charge international roaming fees.

Can I use my phone as a hotspot with Holafly?

Yes, the Switzerland plan currently allows you to share up to 1 GB of data per day through your phone’s hotspot. This can be useful for connecting a laptop, tablet or travel companion’s phone, although the hotspot allowance is not unlimited.

When should I install my Holafly eSIM?

Install your eSIM at home before your trip while you have a reliable internet connection, but wait to activate it until you arrive in Switzerland. Your plan begins once the eSIM connects to a supported network, and each day is measured as a complete 24-hour period.

Should I purchase my Switzerland eSIM before arriving?

Yes, purchasing and installing your eSIM before departure makes arriving in Switzerland much easier. Once you land, you can activate the Holafly line, enable data roaming for that eSIM and connect without visiting a mobile phone store or relying on airport Wi-Fi.

Can I use the Switzerland eSIM in other European countries?

The Switzerland eSIM is designed specifically for use in Switzerland. If your trip includes France, Italy, Germany or other nearby countries, consider purchasing Holafly’s regional Europe eSIM instead. Always check the current list of included destinations before purchasing.

Is Holafly better than international roaming?

Holafly can be more convenient and affordable than paying your carrier’s daily international roaming fee, particularly on a longer trip. It also gives you a known upfront cost and unlimited data. However, compare the total eSIM price with your carrier’s current international plan before deciding.