Best eSIM for Switzerland 2026: Saily Tested by a Swiss Local
- Nico Dudli
- Jun 26
- 19 min read
Updated: 2 hours ago
Quick answer: Based on my own on-ground tests as a Swiss resident, Saily is the eSIM I would personally choose for Switzerland in 2026. I measured up to 515 Mbps download in my Swiss tests, peaking on a 5G connection near Chur, with 0% packet loss. During my Engadin test, the Saily eSIM was already installed, and switching my iPhone's mobile-data line to Saily produced a stable connection within about two minutes. You can find the best current discount for Switzerland in my dedicated Saily Coupon Codes 2026 Guide.
Affiliate transparency: I am a Saily affiliate partner and may earn a commission if you buy through my link or use a promo code from my coupon guide. You pay the same or less, never more. These commissions help support TechNovice and let me keep testing travel eSIMs in real situations. New to eSIMs in general? Start with my eSIM explained guide. For every active code across all my guides, see my full guide to all working Saily coupon codes 2026.
Saily Switzerland: Pros and Cons
Pros | Cons |
|---|---|
Fast speeds in my Swiss tests: up to 515 Mbps on 5G | No local Swiss +41 phone number; optional US phone number add-on only |
Worked on both Salt and Sunrise during my tests | Unlimited plans cost more than fixed-data plans |
Very easy setup before arrival in Switzerland | Exact local partner network can vary by location and roaming agreement |
Local Swiss prepaid SIMs can be cheaper for long stays | |
Hotspot support for laptop use while travelling | Not ideal if you need unlimited data with zero usage tracking |
Easy in-app top-ups and 80% usage notifications | Requires an eSIM-compatible phone |
Exclusive discounts available via my Saily Coupon Guide | A local Swiss prepaid SIM may still be better if you need a Swiss number or long-term local plan |
For most visitors, the pros clearly outweigh the cons. If you mainly need Google Maps, WhatsApp, hotel messages, train connections, streaming and occasional hotspot use, Saily is one of the easiest Switzerland eSIM options I have tested.
Why I Recommend Saily for Switzerland
Most "best eSIM" lists for Switzerland are written by people who have never set foot here. I have — for over 30 years. I tested Saily on-ground in the St. Gallen / Lake Constance region and across the Alpstein, with my Swiss SIM data fully deactivated, running Saily as my sole connection on an iPhone 15 Pro.
The result: 271–370 Mbps download on Salt 5G, 0% packet loss, idle ping of 36–39 ms. For a country with some of the densest, fastest mobile infrastructure in the world, that's exactly the bar an eSIM has to clear — and in my tests, Saily cleared it comfortably.
In my documented tests, Saily used Salt in the St. Gallen and Lake Constance region and Sunrise during my Alpstein tests. I did not need to select either network manually. The exact partner network may vary by location and over time, so these results should be understood as observations from my specific test dates and locations rather than a permanent list of Saily's Swiss network partners.
I have lived in Switzerland for over 30 years and know how much mobile performance can vary between cities, valleys and Alpine terrain. Most of my Saily results were strong, but I have published the weaker measurements and the temporary signal dropout as well, rather than selecting only the best results.
Real Test Setup
I'm Nico Dudli, a Swiss digital transformation consultant and tech author based in St. Gallen, Switzerland. I've tested Saily across 12 countries in Europe and Asia and compared it against Airalo and Holafly in my Saily eSIM review. Switzerland is my home — this is the one review where I can judge Saily against a baseline I know inside out.
Test method: Swiss SIM data off → Saily eSIM only → multiple speed tests across different locations and days, all publicly verifiable via Speedtest Test ID.
Saily Features That Matter in Switzerland
Before looking at the speed tests, it is worth understanding why I recommend Saily for Switzerland beyond raw download numbers. Fast mobile data matters, but for travellers, setup, security, hotspot support and easy top-ups are just as important.
Feature | Why it matters in Switzerland | My take |
|---|---|---|
Built-in web protection | Useful on hotel Wi-Fi, airport Wi-Fi, train station Wi-Fi and public networks | A strong extra benefit, especially because Saily comes from the Nord Security team |
Ad blocker | Helps reduce annoying ads and can save a small amount of data while browsing | Useful for travel research, maps, blogs and booking sites |
Virtual location | Lets you browse more privately and choose from 115+ virtual locations | Helpful if you care about privacy or want to access home content while travelling |
Optional US phone number add-on | Useful if you want a separate number for calls, texts, OTPs or travel sign-ups | Good extra feature, but it is a +1 US number, not a local Swiss +41 number |
Top-ups in the app | You can add more data without buying a new physical SIM or visiting a Swiss store | Very practical for longer Switzerland trips or heavy hotspot use |
80% data usage notification | Saily notifies you before your plan runs out, so you still have time to top up | Very useful in Switzerland, especially if you use maps, hotspot or streaming often |
Hotspot support | Lets you share your eSIM connection with a laptop or tablet | Important for remote workers, digital nomads and travellers booking trains or hotels |
30-day activation window | You can buy before departure and activate only when you connect in Switzerland | Ideal for travellers who want everything ready before landing |
One eSIM for multiple trips | You can keep using the same Saily eSIM and simply add new plans | More convenient than buying a new SIM or eSIM for every destination |
Global and regional plans | You can use Saily not only for Switzerland, but also for Europe or multi-country trips | Helpful if Switzerland is part of a longer Europe itinerary |
Works in 200+ countries | Useful if Switzerland is only one stop on a larger international trip | One of Saily's biggest advantages over local prepaid SIMs |
24/7 support | Support is available if something goes wrong during setup or connection | Important for travellers who do not want to troubleshoot an eSIM alone abroad |
Saily Ultra option | Adds global data, airport lounge access, fast-track service and Nord Security tools | Better for frequent travellers than for a simple weekend trip |
In short: I would not recommend Saily for Switzerland only because it was fast in my tests. The bigger advantage is that Saily combines travel data, security features, easy top-ups, usage notifications, hotspot support, optional US phone-number functionality and 24/7 support in one app.
Saily eSIM Switzerland Speed Test Results (2026)
Eight tests across different locations, iPhone 15 Pro, Salt 5G/LTE (St. Gallen / Lake Constance) and Sunrise 5G/LTE (Alpstein / Appenzell, Schwägalp):
Test | Location | Network | Download | Upload | Idle Ping | Packet Loss | Date | Test ID |
|---|---|---|---|---|---|---|---|---|
1 | St. Gallen | Salt 5G | 369.79 Mbps | 40.44 Mbps | 36 ms | 0% | 23.05.2026 | 7086459991 |
2 | Rorschach | Salt LTE | 140.34 Mbps | 18.20 Mbps | 75 ms | 0% | 23.05.2026 | 7088521261 |
3 | Alpstein — Bogartenlücke | Sunrise LTE | 44.69 Mbps | 13.49 Mbps | 57 ms | — | 31.05.2026 | 7095680188 |
4 | Alpstein — Bogartenlücke | Sunrise LTE | 33.96 Mbps | 0.06 Mbps | 60 ms | — | 31.05.2026 | 7095674079 |
5 | Alpstein — Bogartenlücke | Sunrise 5G | 65.25 Mbps | 17.28 Mbps | 45 ms | 0.36% | 31.05.2026 | 7095623987 |
6 | Alpstein — Bogartenlücke | Sunrise 5G | 3.3 Mbps | 8.91 Mbps | 60 ms | 100.36%* | 31.05.2026 | 7095622336 |
7 | Schwägalp — Säntis-Talstation | Sunrise LTE | 130.07 Mbps | 5.15 Mbps | 56 ms | — | 05.06.2026 | 7102550050 |
8 | Schwägalp — Säntis-Talstation | Sunrise LTE | 42.89 Mbps | 3.71 Mbps | 54 ms | — | 05.06.2026 | 7102578922 |
All tests publicly verifiable at speedtest.net via Test ID. Test location for Tests 3–6: Bogartenlücke, Alpstein (Appenzell Innerrhoden), approx. 1,500 m altitude. Speedtest server was the nearest available node (Gais / Buchs) — not the physical test location.
*Test 6 (Alpstein — Bogartenlücke, 5G, 09:37): 100.36% packet loss indicates a complete signal dropout, recorded at the start of the ascent before a stable 5G connection was established — typical in Alpine terrain during network transitions. By 09:40 (Test 5), the same 5G network delivered 65.25 Mbps with only 0.36% packet loss.
Bonus Field Test: Chur & Churwalden (Graubünden)
I ran four additional Saily Speedtests on 18 July 2026 while travelling between Chur and Churwalden in Graubünden. GPS data confirms that all four tests were performed inside Switzerland.
Some results used Speedtest servers operated by companies in Liechtenstein or Austria. The selected Speedtest server does not necessarily identify the mobile network carrying the Saily connection, so I have listed it separately and do not treat it as proof that Saily connected to a foreign mobile network.
Test | Location (GPS-verified) | Speedtest server | Download | Upload | Idle Ping | Date | Test ID |
|---|---|---|---|---|---|---|---|
9 | Churwalden, GR | Speedcom AG (Liechtenstein), 3G | 5.97 Mbps | 2.28 Mbps | 47 ms | 18.07.2026 | 7158204616 |
10 | Chur, GR | Hoi Internet AG (Liechtenstein), 5G | 515.19 Mbps | 40.85 Mbps | 48 ms | 18.07.2026 | 7158223828 |
11 | Chur, GR | Speedcom AG (Liechtenstein), LTE | 118.37 Mbps | 50.63 Mbps | 60 ms | 18.07.2026 | 7158279526 |
12 | Churwalden, GR | Montafonerbahn (Austria), LTE | 32.29 Mbps | 16.94 Mbps | 48 ms | 18.07.2026 | 7158401314 |
All GPS coordinates confirm that the tests were performed in Graubünden, Switzerland. Speedcom AG, Hoi Internet AG and Montafonerbahn were the servers selected by Speedtest for these measurements. A Speedtest server may be located outside the country because of internet routing, latency or server availability. It does not by itself reveal the mobile carrier used by the Saily eSIM.
The fastest result: Test 10 delivered 515.19 Mbps download — the highest speed recorded across all of my published Switzerland tests. The connection type shown in the Speedtest result was 5G, and the selected test server was Hoi Internet AG in Liechtenstein.
The slowest result: Test 9 recorded 5.97 Mbps download and 2.28 Mbps upload on a 3G connection. Although idle ping was 47 ms, latency increased sharply under load, with download ping reaching 2,507 ms and upload ping reaching 2,825 ms. Based on these measurements, basic messaging should remain possible, but loading maps, websites or sending larger files may feel noticeably slower.
What this means for travellers: Connection quality varied significantly between the four Graubünden tests, from 5.97 Mbps on 3G to 515.19 Mbps on 5G. This shows how strongly performance can change with exact location, network conditions and connection type. The foreign company names displayed in the results refer to the selected Speedtest servers and should not be interpreted as confirmed mobile roaming partners.
Real-world check: Test 12 recorded 32.29 Mbps download and 16.94 Mbps upload while I was trail running near Churwalden. Speedtest selected a server operated by Montafonerbahn in Austria. During the run, I streamed Spotify Lossless without a single dropout, showing that the connection was useful for more than just running a benchmark.
Extended Field Test: Engadin, Switzerland (27–30 July 2026)
To complement my earlier tests in eastern Switzerland, the Alpstein and Graubünden, I spent four days in the Upper Engadin using Saily as my primary internet connection — recording multiple Speedtests while travelling between Camping Gravatscha (Samedan), St. Moritz, Celerina and the road towards Silvaplana.
During the documented remote-work session on 30 July, I connected my MacBook Air M2 exclusively via USB tethering to an iPhone 15 Pro using a Saily eSIM. Wi-Fi remained disabled during this session while I edited TechNovice articles in Wix, answered emails, used ChatGPT, streamed Spotify and verified the connection with a public Ookla Speedtest.
Complete Engadin Speed Test Log
Date | Approx. Location | Download | Upload | Ping | Packet Loss | Test ID |
|---|---|---|---|---|---|---|
27 Jul 2026 | Camping Gravatscha (Samedan) | 33.33 Mbps | 13.32 Mbps | 96 ms | 0% | 7170003632 |
28 Jul 2026 | St. Moritz | 181.34 Mbps | 38.34 Mbps | 58 ms | 0% | 7171264602 |
29 Jul 2026 | Celerina | 57.34 Mbps | 4.33 Mbps | 45 ms | 0% | 7172347779 |
29 Jul 2026 | St. Moritz → Silvaplana | 58.06 Mbps | 48.20 Mbps | 46 ms | 0% | 7172460276 |
29 Jul 2026 | St. Moritz → Silvaplana | 113.84 Mbps | 11.45 Mbps | 63 ms | 0% | 7172463831 |
29 Jul 2026 | St. Moritz → Silvaplana | 316.61 Mbps | 76.04 Mbps | 45 ms | 0% | 7172500120 |
30 Jul 2026 | St. Moritz | 27.68 Mbps | 19.03 Mbps | 47 ms | 0% | 7173697281 |
30 Jul 2026 | Camping Gravatscha (Samedan) | 60.35 Mbps | 10.70 Mbps | 53 ms | 0% | 7174014357 |
The lower result on 30 July (27.68 Mbps, St. Moritz) was recorded mid-morning at a different spot in town than the 181.34 Mbps test the day before — a reminder that even within the same location, results can shift with network load and exact position.
Verification: Every result above was recorded with the Speedtest app on an iPhone 15 Pro using a Saily eSIM and can be independently verified using the corresponding Speedtest Test ID. Tests were performed over multiple days under real travel conditions rather than during a single benchmark session.
What These Results Mean
The highest speed I recorded in the Engadin reached 316.61 Mbps download, while even my slowest results remained sufficient for maps, messaging, email and general web browsing. Throughout the trip, I used Saily for real work, including editing and publishing TechNovice articles in Wix, researching sources, answering emails, using ChatGPT and streaming Spotify.
Real-World Remote Work Experience with Saily in the Engadin
These observations are based on my own experience using Saily in Switzerland during several days of travel and remote work in the Engadin.
How long did setup take?
Because the Saily eSIM was already installed on my iPhone from previous trips, this was not a first-time installation test. I purchased a Switzerland data plan and selected Saily as the active mobile-data line in the iPhone settings. The connection was usually fully stable within about two minutes.
The only manual step was making sure that iOS used Saily, rather than my regular Swiss Wingo SIM, for mobile data. Once the correct data line was selected, Saily connected automatically without requiring APN changes, Airplane Mode or a phone restart.
Did the connection ever drop?
No.
During the four-day Engadin test, I never experienced a complete loss of connection that required restarting the phone, switching Airplane Mode on and off or manually selecting another network.
Even while hiking around St. Moritz and in the surrounding mountains I always had mobile coverage. In some valleys speeds were lower, but I never completely lost signal.
Did I need to select a mobile network manually?
No. Saily connected automatically throughout the Engadin test, and I never manually selected a mobile network or changed the network settings. I did not consistently record the underlying mobile partner during every Engadin Speedtest, so I cannot reliably attribute each result to a specific carrier.
Can you work an entire day using only Saily?
Yes.
For several days I used Saily as my primary internet connection while working from Camping Gravatscha near Samedan.
Typical daily activities included:
editing TechNovice articles in Wix
answering emails in Gmail
researching sources
using ChatGPT
streaming Spotify (Lossless)
browsing with multiple tabs open
publishing website updates
The connection remained stable throughout normal work.
USB tethering or Wi-Fi hotspot?
I used both USB tethering and Apple's wireless Personal Hotspot.
For longer work sessions, I connected my MacBook Air M2 to the iPhone 15 Pro with a USB-C cable. This provided the most consistent connection and charged the iPhone at the same time.
When I needed to connect quickly, I used the wireless Personal Hotspot instead. Both methods worked without connection drops, but I preferred USB tethering for longer sessions.
Any slowdowns?
Only during heavier multitasking.
When Gmail, Spotify Lossless, Wix and several browser tabs were active at the same time, some pages occasionally loaded more slowly. Closing tabs and applications that I was not actively using improved responsiveness.
Spotify continued streaming without interruptions, and I was still able to work in Wix and Gmail at the same time.
Did you use campsite Wi-Fi?
Only occasionally, mainly to save mobile data when free campsite Wi-Fi was available.
The documented remote-work session and the published Engadin Speedtests were performed using the Saily mobile connection, not the campsite Wi-Fi.
When I did use the shared campsite Wi-Fi, I connected through NordVPN because the same WPA2 password was provided to many guests and did not appear to be changed regularly.
Would I rely on Saily as my only internet connection?
Yes.
Based on my four-day Engadin test, I would rely on Saily as my primary mobile connection during a Switzerland trip. I used it for remote work, email, Wix, ChatGPT, Spotify, navigation and laptop tethering without needing to restart the phone or manually reconnect the eSIM.
I would still use trusted Wi-Fi occasionally to conserve mobile data, but I would not consider Wi-Fi essential for normal travel and remote-work tasks in the locations I tested.
I have also used Saily successfully in Thailand and Vietnam, but the conclusions in this section refer specifically to my documented Switzerland tests.
What These Speeds Mean for Travelers
Use case | Needed | Saily result |
|---|---|---|
Google Maps / Apple Maps | ~1 Mbps | ✅ Easily covered |
FaceTime / WhatsApp video call | ~3–5 Mbps | Speeds were sufficient in most tests; not separately tested |
4K streaming (Netflix, YouTube) | ~25 Mbps | Speeds were sufficient in most tests; not separately tested |
Laptop hotspot | ~20–50 Mbps | ✅ Comfortable |
Navigation during Alpine hike | ~1 Mbps | ✅ No issues (tested Bogartenlücke, 1,500 m, Sunrise LTE) |
Verizon / AT&T international day pass | ~$10–13/day | ❌ Avoid |
💡 Pro tip (from a Swiss local): Verizon TravelPass costs $12/day in Switzerland — $84 for a 7-day trip, with only 5 GB high-speed data before throttling to 3G. Saily's 5 GB / 30-day plan costs $13.99 total (and even less if you apply a promo code from my Saily Coupon Guide). Same data volume. Six times cheaper.
Option | Cost (7 days) | High-speed data | After limit |
|---|---|---|---|
Verizon TravelPass | $84 | 5 GB/day | 3G throttled |
Saily 5 GB / 30 days | $13.99 | 5 GB total | — |
Saily 10 GB / 30 days | $22.99 | 10 GB total | — |
Saily eSIM Switzerland Plans and Pricing (2026)
Data | Validity | Price | With applied promo code |
|---|---|---|---|
1 GB | 7 days | $3.99 | ~$3.39 |
3 GB | 30 days | $9.99 | ~$8.49 |
5 GB | 30 days | $13.99 | ~$11.89 |
10 GB | 30 days | $22.99 | ~$19.54 ⭐ |
20 GB | 30 days | $36.99 | ~$31.44 |
Unlimited | 10–30 days | from $48.99 | from ~$41.64 |
Check my Saily Coupon Codes 2026 Guide for the latest tested promo codes to get a discount on your Switzerland eSIM. For the full breakdown of which plan fits which trip, see my Saily eSIM Plans guide.
Is Saily expensive for Switzerland? No — it's affordable by local standards. SBB occasionally offers slightly cheaper data, but setup is more complex and you lose global reusability. One Saily eSIM works across 200+ countries, which is what makes it the eSIM I keep coming back to for Switzerland specifically, not just a cheap one.
How to Activate Saily eSIM in Switzerland
On iPhone:
Download the Saily app and buy your Switzerland plan
Install the eSIM via QR code or direct install (iOS 17+)
Travel to Switzerland — the eSIM activates automatically on arrival
Done — you're online within minutes
→ Full step-by-step guide: How to set up Saily eSIM on iPhone
On Android:
Download the Saily app and buy your Switzerland plan
Install the eSIM via QR code in your device settings
Travel to Switzerland — activate manually if needed
Done — you're online within minutes
→ Full step-by-step guide: Saily eSIM Android setup
For international travelers: Local Swiss prepaid options can require ID registration in a store and may be less convenient for short trips. For most international travelers, buying and installing a Saily eSIM before arrival is simpler than comparing local prepaid options after landing.
💡 Pro tip: Saily gives you a 30-day activation window. Buy today — the plan doesn't start until you first connect in Switzerland.
Why I Recommend Saily Over Airalo and Holafly
Provider | Best for | Switzerland pricing style | Security features | Hotspot | Phone number | My verdict |
|---|---|---|---|---|---|---|
Saily | Most travellers who want flexible data, easy setup and good value | Fixed-data plans plus unlimited options | Built-in web protection, ad blocker and virtual location | Yes | Optional US phone number add-on available in the Saily app | My first choice for most Switzerland trips |
Airalo | Travellers who want a simple fixed-data eSIM | Fixed-data plans | No major built-in security suite | Usually yes | Usually data-only, depending on plan | Good alternative, but less feature-rich |
Holafly | Heavy data users who want unlimited data | Unlimited-focused | No comparable built-in Nord Security bundle | Often limited depending on plan | Usually data-only for travel eSIMs | Better for unlimited data, usually less flexible on price |
Saily vs Airalo: Fixed-data pricing is close, but Saily gives you more than just mobile data. In my Switzerland tests, Saily connected to Salt and Sunrise depending on location, and the app also includes built-in web protection, ad blocking, virtual location features and an optional US phone number add-on. That makes Saily the stronger overall travel eSIM for most visitors.
Holafly vs Saily: Holafly is attractive if you want unlimited data and do not want to think about usage. For a normal 1–2 week Switzerland trip, I still prefer Saily because the fixed-data plans are cheaper for most travellers, hotspot is supported, top-ups are simple, active promo codes are often available, and Saily also offers an optional US phone number add-on inside the app.
Who Should Use Saily in Switzerland
Saily is a good fit if you:
Want a single eSIM that switches networks automatically as you move around the country
Are visiting for a standard 1–2 week trip with normal data needs (maps, messaging, some streaming, occasional hotspot use)
Plan to continue on to other European countries afterward — one Saily eSIM covers 35+ European destinations. If Switzerland is part of a wider Europe trip, also see my real Saily Portugal test and my broader Saily Europe review.
Want built-in web protection, ad blocking, virtual location features, easy top-ups and optional US phone number functionality in one travel app
Saily may not be the best fit if you:
Need genuinely unlimited data with zero tracking — Holafly's unlimited plans remove that mental overhead, at a higher price
Need the absolute lowest entry price for a tiny 1 GB top-up — Airalo is sometimes a cent or two cheaper on the smallest plans
Need a real Swiss +41 phone number for local calls, Swiss banking setup or Swiss SMS verification — Saily offers an optional US phone number add-on, but not a local Swiss number
Final Verdict
After testing Saily across St. Gallen, Lake Constance, the Alpstein, Schwägalp, Chur, Churwalden and the Upper Engadin, my conclusion is that it is the travel eSIM I would personally recommend first for most visitors to Switzerland. My published results range from 3.3 Mbps during a temporary Alpine connection problem to 515.19 Mbps on 5G near Chur. During a separate four-day Engadin test, all eight measurements showed 0% packet loss and download speeds between 27.68 and 316.61 Mbps.
I also used Saily for real remote work through USB tethering and Personal Hotspot, including Wix, Gmail, ChatGPT and Spotify Lossless. The eSIM was already installed for the Engadin test; after selecting Saily as the active mobile-data line, the connection was usually stable within about two minutes. Performance varied by location, but I did not need to restart the phone or manually reconnect the eSIM during the four-day Engadin test.
Before you check out, see my full guide to all working Saily coupon codes 2026 for the latest verified offers and highest active discounts for Switzerland.
Frequently Asked Questions
Is Saily a good eSIM for Switzerland?
Based on my own on-ground tests, yes. Saily delivered download speeds ranging from 3.3 Mbps during a temporary Alpine connection problem to 515.19 Mbps on 5G near Chur. During my four-day Engadin test, all eight published measurements showed 0% packet loss, and I used the connection successfully for remote work, navigation, email, streaming and laptop tethering.
Does Saily eSIM work in Switzerland?
Yes. In my on-ground test in May 2026 in the St. Gallen / Lake Constance region, Saily delivered 271–370 Mbps download with 0% packet loss on Salt 5G.
What network does Saily use in Switzerland?
In my documented tests, Saily used Salt in the St. Gallen and Lake Constance region and Sunrise during my Alpstein tests. I did not need to select either network manually. The exact partner network may vary by location, date and Saily's current roaming agreements, so these observations should not be treated as a permanent or complete network list.
Why did my Switzerland Speedtests use servers in Liechtenstein and Austria?
During my tests near Chur and Churwalden, Speedtest selected servers operated by Speedcom AG and Hoi Internet AG in Liechtenstein and Montafonerbahn in Austria. All GPS coordinates confirm that the tests themselves were performed inside Switzerland. A foreign Speedtest server does not prove that the Saily eSIM was connected to a foreign mobile network; server selection can also depend on routing, latency and availability.
Is Saily eSIM good for Switzerland travel?
In my experience, yes — particularly for international visitors who mainly need mobile data for maps, messaging, bookings, streaming and occasional laptop use. During my Engadin test, the eSIM was already installed; after selecting Saily as the active mobile-data line, the connection was usually stable within about two minutes.
How much does Saily eSIM cost for Switzerland?
Saily Switzerland plans start at $3.99 for 1 GB (7 days). The most popular option is 10 GB for 30 days at $22.99. Check my Saily Coupon Guide for active discount codes.
What is the Saily discount code for Switzerland?
Saily runs seasonal promotions and varying discounts. I keep a constantly updated list of the best active codes for Switzerland eSIMs in my dedicated Saily Coupon Codes 2026 Guide.
Does Saily give you a phone number in Switzerland?
Saily's Switzerland eSIM data plans are primarily for mobile data, but Saily now also offers an optional US phone number add-on inside the app. This gives you a persistent +1 number for calls, texts, OTPs and app sign-ups. It is not a Swiss phone number, so it is not the same as getting a local Swiss SIM card with a +41 number.
For most Switzerland travellers, this is still useful: you can use Saily for mobile data, keep your regular number active if needed, and optionally add a Saily US phone number for travel communication or verification use cases.
Can I top up my Saily Switzerland eSIM?
Yes. You can add more data directly in the Saily app if you run out during your trip. This is much easier than buying a local Swiss prepaid SIM, especially for short stays where ID registration and store visits are not worth the hassle.
Is Saily eSIM better than Airalo for Switzerland?
For most travelers, in my experience, yes. Pricing is comparable, but Saily connected to multiple Swiss networks in my tests, and its app includes built-in web protection. See the full Saily vs Airalo comparison.
Does Saily work in the Swiss Alps?
In my documented Saily tests, yes. I recorded results in the Alpstein at approximately 1,500 m and near Schwägalp / Säntis-Talstation. Performance varied, including one temporary connection problem, but stable LTE and 5G connections were available during the tested routes.
Can I buy a Saily eSIM on arrival in Switzerland?
Yes. You can purchase a Saily eSIM online after arriving in Switzerland, provided you still have access to Wi-Fi or another internet connection for the purchase and installation. However, I recommend installing the eSIM before departure so that it is ready when you arrive.
Does Saily eSIM support hotspot in Switzerland?
Yes. During my Engadin test, I connected a MacBook Air M2 to an iPhone 15 Pro using both USB tethering and Apple's wireless Personal Hotspot. Both methods worked without connection drops during my documented work sessions, although I preferred USB tethering for longer sessions.
Does Saily work during Alpine hiking in Switzerland?
Yes, in my tests. I tested Saily in the Alpstein at Bogartenlücke on 31.05.2026 and near Schwägalp / Säntis-Talstation on 05.06.2026, both on Sunrise via iPhone 15 Pro, approx. 1,500 m. LTE delivered 34–44 Mbps at Bogartenlücke and 42–130 Mbps near Schwägalp — sufficient for navigation, WhatsApp, and maps throughout. 5G peaked at 65.25 Mbps once stable. One brief signal dropout at the start of the Bogartenlücke ascent, typical for Alpine terrain.
Does Saily work in the Engadin and St. Moritz?
Yes, in my tests. Over four days in the Upper Engadin — Camping Gravatscha near Samedan, St. Moritz, Celerina and the road towards Silvaplana — Saily delivered download speeds between 27.68 and 316.61 Mbps with 0% packet loss across all eight published tests. I used it as my primary mobile connection for remote work. During the documented session on 30 July, my MacBook Air M2 was connected exclusively to an iPhone 15 Pro via USB tethering while I worked in Wix and Gmail, used ChatGPT and streamed Spotify Lossless. I did not experience a connection loss that required restarting the phone or manually reconnecting the eSIM.
More Saily Guides on TechNovice
About the Author
Nico Dudli is a lecturer in business informatics, digital technologies and AI at Swiss higher professional education institutions. He is the founder of Heyweb GmbH and TechNovice.net. Based in St. Gallen, Switzerland, he tests digital tools and travel technology under real-world conditions and writes about AI, cybersecurity, eSIMs and practical digital trends.
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