At ZRH or Geneva Airport, one queue waits for a plastic SIM from Swisscom, Sunrise or Salt. The other already has data: a travel eSIM installed before the flight. eSIM vs local SIM is not a draw. Compatible unlocked mobile: take the eSIM. Local prepaid only becomes relevant when the eSIM does not hold, or when you truly need a Swiss number.
This guide compares travel eSIM and a local SIM / carrier eSIM for everyone: solo, couple, family, group, business, older travellers, teenagers, phones with no eSIM. The hosts stay the same. Detail in the network guide. Plans sit on the Switzerland comparison.
Supplier links are affiliates. They do not move the eSIM verdict or the catalog prices. Detail in the methodology.
eSIM or local SIM in Switzerland: the verdict
| Factor | Travel eSIM | Local SIM / eSIM (Swisscom, Sunrise, Salt) |
|---|---|---|
| Purchase | Before the flight, two minutes | Desk, passport, ID |
| ZRH / GVA / BSL queue | No | Yes, desk hours |
| Swiss number | Rare (usually data only) | Yes, useful for restaurants, deliveries, sometimes Twint |
| Host | The one written on the plan | The MNO on the logo above the desk |
| Home bank SMS | Keep the UK or Irish line | Risk if you pull the home SIM |
| Best for | 5 to 21 days, no commitment | Long stay, need for a local 07x |
Rule: eSIM-ready phone, 1 to 3 lines, 5 to 21 days: eSIM. Stay of several months, a Swiss number is mandatory, Galaxy with no eSIM: plastic SIM. EE, Vodafone, Three or an EU home tariff in Switzerland is not the third default tool: many SKUs add Switzerland to a commercial Europe list, others do not. Recheck this week’s factsheet. Detail in the roaming guide. EU roaming legally does not include Switzerland.
Three eSIMs we track, useful once the phone passes the check:
CodeESIMP15
CodeSIMP
CodeESIMP
Who it is for: solo, family, expats, business
| Profile | Pick | Why |
|---|---|---|
| Solo, compatible iPhone / Pixel / Galaxy | eSIM | Maps + Twint, no queue |
| Couple, two unlocked mobiles | 2 eSIMs (or 1 + tethering) | Two bars. One prepaid does not save the second phone |
| Family, kids / tablets | Adult eSIMs + hotspot | Bank, Revolut, Monzo, PayPal and HMRC OTPs stay on the UK or Irish line |
| Group of 5+ | eSIM or pocket Wi-Fi | Five local SIMs is five queues |
| Business, laptop | eSIM + tethering | The ZRH queue costs more than an hour of data |
| Older traveller, uneasy with a QR | eSIM installed at home | The desk is not simpler once the passport is out |
| Teens on a cheap SIM | eSIM, home data off before boarding | A light UK PAYG or Irish SIM carries almost nothing outside the EU |
| Stay of 3+ months, a visa, local admin | Local SIM | A Swiss number for agencies, deliveries, local OTPs |
| Mobile with no eSIM | Plastic SIM or pocket Wi-Fi | The eSIM is not relevant. Check the model first |
A reader who needs a local number is not “behind”. They need a different tool. The rest of this guide assumes a short stay, the usual case on our catalog.
What the local SIM actually wins
Swisscom / Sunrise / Salt prepaid is not a 2010 gadget. It wins three cases, not more.
- A Swiss number. Restaurants, sometimes an OTP from a local app, some deliveries. Travel eSIMs are almost always data only. WhatsApp and Twint also work on data.
- A long stay. Three months in Lausanne: franc per GB on a local postpaid can win. Five days in Zurich, no, once you count the queue. Swiss prepaid is often expensive.
- No eSIM. Galaxy on an EE, Vodafone, Three or Tesco contract, old iPhone. The QR will fail. The eSIM compatibility tool says so before you pay, not at GVA.
The rest (“my cousin in Geneva does this”) is not an argument. Your cousin is a subscriber. You are a visitor.
What the eSIM wins (almost always)
Friction. Buy from the sofa. Install on home Wi-Fi. Enable on landing. No queue, no desk hours, no ID at the counter.
Dual SIM. iPhone and most recent Galaxies: home line for the number (UK high-street banks, Revolut, Monzo, PayPal, HMRC). Switzerland eSIM = data line. You no longer choose between Maps and the card OTP.
A readable host. On our side the host networks column names Swisscom, Sunrise or Salt. A desk often sells “20 GB” without saying whether you will be on Swisscom or Salt once you leave the airport. Same radio possible, less information before you pay.
Salt is not Sunrise. A Swisscom SIM at the desk, a “Salt” eSIM SKU, an Orange Travel eSIM: three products. Do not merge them because the country is small. Orange Travel is a travel eSIM reseller, not EE roaming.
The network ranking applies to both tools. A Salt SIM in Zermatt is no more magic than a Salt eSIM. Pick the host, not the plastic.
| Provider | Typical host | Code | Offer | Review |
|---|---|---|---|---|
| Airalo | Swisscom (often) | ESIMP15 | Offer | Review |
| Ubigi | check live | ESIMP | Offer | Review |
| Holafly | check live | SIMP | Offer | Review |
 Nomad | check live | ESIMPNOMAD | Offer | Review |
 Orange Travel | check live | ESIMP | Offer | Review |
Estimate gigabytes for maps, video and hotspot.
Open calculatorPHONEeSIM compatibilityCheck iPhone, Pixel and Galaxy before you buy. EE, Vodafone or Three SKUs are not always eSIM.
Check my phoneHow much data for your trip in Switzerland?
Three typical trips, same maths as the calculator, Europe factor. Maps, SBB, Reels or a laptop on tethering: the same gigabytes on an eSIM or a pocket Wi-Fi box. Hotel Wi-Fi is common: aim for the low end if you turn off photo backup on cellular. Read the fair use.
Estimate 7 GB · Maps, chat, Instagram. No Reels, no laptop.
Estimate 14 GB · Same base, plus half an hour of video a day.
Estimate 26.8 GB · One hour of phone tethering a day for the computer.
Mistakes that still cost money
- Pulling the UK SIM for « a proper local »
You lose Revolut, Monzo, high-street OTPs. Dual SIM: Switzerland eSIM + home line. No eSIM: pocket Wi-Fi or a local SIM in the second tray, not in place of the home number.
Check compatibility - Thinking Switzerland is EU roaming
Legally no. Your SKU may add it. Recheck the factsheet. A local SIM is no more magic than an eSIM on the same host.
Compare Switzerland eSIMs - Queuing at ZRH for 8 days in Zurich
Passport, ID, prepaid often dear. An eSIM installed at home skips that. The local SIM wins on a long stay, not on a long weekend.
Compare Switzerland eSIMs - Scanning the QR on a phone with no eSIM, at the airport
The test is before you buy. Fail: plastic SIM or pocket Wi-Fi, not a QR in the queue.
Check compatibility - Buying local « unlimited » without reading fair use
Swiss PAYG throttles too. Calculate the GB. Unlimited without tethering does not save a laptop.
Calculate GB
FAQ
eSIM or local SIM in Switzerland?
Compatible unlocked phone: travel eSIM, installed before you fly. A plastic local SIM wins for a stay of several months or if you need a Swiss number. Ten days in Geneva, the eSIM wins on the ZRH / GVA queue.
Do I need ID for a Swisscom, Sunrise or Salt SIM?
Yes, ID at the prepaid desk is the rule. Passport. A travel eSIM is bought with no ZRH queue. It is not the same product: data only on one side, sometimes a local 07x on the other.
Is a local SIM cheaper than an eSIM?
Swiss prepaid is often dear in francs. For 5 to 21 days, add the desk and the time. The €/GB on the Switzerland catalog often comes out ahead, with no counter. A stay of several months can flip the sum.
Can I keep my UK number with a local SIM?
Only if the phone is dual SIM. Pulling the EE, Vodafone or Three SIM for « a proper local » drops Monzo, Revolut and high-street OTPs. A travel eSIM leaves the home line on. That is the clean move.
Are Swisscom, Sunrise and Salt the same network?
No. Three distinct MNOs. Swisscom holds coverage (mountains, SBB). Salt and Sunrise fight in town. Read the host written on the plan, not « 5G Switzerland ».
Where can I buy a local SIM in Zurich or Geneva?
Airport desks (ZRH, GVA, sometimes BSL) and city shops. Opening hours, passport, prices in CHF. The eSIM installs on home Wi-Fi. The desk still helps if the phone has no eSIM.
Sources
All external sources open in a new tab.
- Opensignal, Switzerland Mobile Network Experience Report, April 2026.
- CHIP / NET CHECK, Switzerland network test April 2026.
- Prepaid subscriber ID: ID at the counter. Cross-check the desk board on the day.
- eSIM Giga catalog: Switzerland comparison.
- Sibling guides: best mobile network in Switzerland, eSIM or pocket Wi-Fi, Internet in Switzerland, roaming or eSIM.
A travel eSIM and a local SIM often ride the same MNOs. What changes is the queue, the number, and the bank SMS. Once the phone is compatible and the stay is short, we stay on the eSIM.