Switzerland SIM Card for International Students: First Weeks Guide

A newcomer to Switzerland needs a passport or ID card to register a prepaid SIM, and a Swiss address or permit for most monthly contracts. Until that paperwork is done, a data only eSIM keeps you online from landing, while you keep your home SIM for calls and bank codes.

Switzerland SIM card for international students: what you need

The short answer: bring your passport or ID card, because prepaid registration is mandatory and checked at handover or first activation. Under the surveillance ordinance (VUPF Art. 20 and 20a) the provider or reseller must verify identity. A Swiss or foreign passport, a Swiss or foreign ID card, or a foreign nationals' residence permit is accepted if valid on the day. A driving licence is not accepted for Swisscom SIM activation.

What to expect:

• Main networks: Swisscom, Sunrise and Salt.
• Where to buy: operator shops and websites. Swisscom physical SIMs can also be collected at kiosks (k kiosk, Press and Books, avec) chosen during the online order.
• ID copies: providers keep a copy of the ID for the customer relationship plus six months.
• eSIM: Swisscom says newcomers with a valid ID can order an eSIM online and activate it immediately. Sunrise and Salt newcomer eSIM rules are not confirmed, so check with the operator.

See the Switzerland data plans for a first-days option.

Prepaid SIM or monthly contract: which comes first

Start with prepaid or an operator eSIM, then move to a monthly contract once your Swiss registration is in place. A monthly contract usually needs a valid passport or ID card, a Swiss residence permit or registration with the commune, and a Swiss address. Whether each operator enforces the permit and address rules, and whether a credit check or deposit applies to newcomers, is not confirmed, so the operator will confirm.

How the two compare:

• Prepaid: lines from Swisscom, Sunrise and Salt. Swisscom prepaid has no fixed costs, but the SIM or eSIM profile becomes invalid after 12 months without use.
• Contract: Swisscom says its expat service does not need a permanent residence permit, and newcomers can start with an eSIM on a valid ID, then move to a subscription once fully registered. Salt asks for one official identity document plus a second document with a photo.
• Month to month postpaid without a minimum term: not confirmed per operator.

A local prepaid SIM or contract is the right long-term choice once your paperwork is ready. A travel eSIM covers the gap before that.

How long the paperwork takes

Registration with the commune happens in person within 14 days of arrival for stays over three months, and the residence permit card follows by registered post a few weeks after your biometric appointment. Timings vary by canton, so treat these as typical rather than fixed.

What to plan for:

• Commune registration: in person within 14 days of arrival (stays over three months).
• Residence permit card: sent by registered post a few weeks after the biometric appointment at the cantonal migration office (Zurich example). Other cantons differ.
• Swiss bank account: waiting time not confirmed. Ask the bank you choose.
• SIM registration: done at the point of sale or first activation, not a separate wait, but you need accepted ID with you.

Never assume a permit outcome for your nationality. Name the document your canton asks for and confirm on the official cantonal or migration office site.

Your first 30 days in Switzerland: a timeline

Days 1 to 3 are for arriving and getting online, days 4 to 14 for commune registration, and the following weeks for the permit card and a local number. Keep your documents together and your home SIM reachable throughout.

A practical order:

1. Before the flight: install a data eSIM so you land connected. Validity starts when it first connects at the destination, so it can be bought and installed at home.
2. Days 1 to 3: use the eSIM for maps, messaging and flat hunting. Keep your home SIM in the phone for calls and bank codes, with data roaming turned off on it.
3. Within 14 days: register with the commune in person.
4. Around the biometric appointment: attend at the cantonal migration office, then wait for the permit card by registered post.
5. Once registered: move to a local prepaid SIM or a monthly contract, and open a Swiss bank account.

Use the data calculator to size your first eSIM.

Staying connected until your local plan is ready

A data only eSIM covers the first days and weeks while your local SIM or contract is being sorted. Slashtel eSIMs are data only: no local phone number and no calls or SMS, but WhatsApp and other internet calls work over the data. Options run from 1 GB to 50 GB, for example $5.59.

How it works:

• Buy online with an email address and a card, Apple Pay or Google Pay. The QR code arrives by email within minutes.
• Install before you fly: validity starts when the eSIM first connects at the destination.
• The network is chosen automatically and cannot be picked by hand.
• More data can be added to the same eSIM later, with no new QR code.
• Your phone must be unlocked and eSIM compatible. Check with the compatibility guide and the install guide.
• Support is on WhatsApp and email, 7 days a week.

This is a bridge, not a replacement for a local plan.

Getting a local number for your bank and admin

A local number is needed once Swiss banks and admin offices want to reach you by call or SMS, and a local prepaid SIM gives you one. The Slashtel eSIM does not give a number, so it cannot receive bank codes or verification texts.

What to do:

• Buy a prepaid SIM from Swisscom, Sunrise or Salt with your passport or ID card, and register it at handover or first activation.
• Keep your home SIM in the phone for calls and bank codes from home, with data roaming off to avoid roaming charges.
• Expect some services to send one time codes by SMS. Read how calls, texts, OTPs and data work with eSIM before you rely on one line.
• For the bank account itself, the waiting time is not confirmed, so ask your chosen bank what it needs.

Once the local number is active, your eSIM can stay as backup data.

When family visits you in Switzerland

Visiting family can use a Slashtel eSIM for the trip, and you can buy it for them. Enter the visitor's email at checkout so the QR code goes straight to the person who will use it. They install it before flying and it activates on first connection in Switzerland.

Good to know:

• It is data only: no local number, no calls or SMS. Internet calls over WhatsApp work.
• The phone must be unlocked and eSIM compatible.
• The network is chosen automatically.
• More data can be added later to the same eSIM, with no new QR code.
• A sim card for parents visiting Switzerland is simpler this way than a shop visit, since no ID registration is needed for a data eSIM.

For longer stays or a local number, they would need a registered local prepaid SIM instead.

Keeping your home number active

Keep your home SIM in the phone and turn off data roaming on it, so calls and bank codes still reach you without roaming charges. Switzerland is outside the EU roaming regime, and Swiss operators only run networks inside Switzerland, so roaming on a Swiss SIM is charged separately from EU roam like at home rules.

Ways to keep the home line alive:

• Leave the home SIM in the phone for incoming calls and SMS, with mobile data switched to the eSIM.
• If your home line is prepaid, top it up before it lapses. Slashtel sells mobile top ups to more than 100 countries, delivered in minutes, which keep a prepaid home line active. See top up and keep your number active.
• Check your home operator's roaming terms before you travel.

This avoids losing the number your bank and family already know.

First-week catches to avoid

Most first-week problems come from ID rules, roaming assumptions and prepaid expiry, not from coverage. Check these before you rely on a new line.

Watch out for:

• ID: a driving licence is not accepted as ID for SIM activation. Bring a passport, ID card or Swiss permit.
• Roaming: Switzerland is outside the EU roaming regime, and Swiss operators only run networks inside Switzerland, so roaming on a Swiss SIM is charged separately from EU roam like at home rules.
• Prepaid expiry: Swisscom prepaid SIMs and eSIM profiles lapse after 12 months without use.
• Contract documents: a permit or commune registration and a Swiss address are usually asked for. Whether a credit check or deposit applies is not confirmed, so the operator will confirm.
• eSIM limits: data only, no number, network chosen automatically.

For a first-days plan, see Switzerland plans and monthly eSIM options.

Sources

Checked 2026-10-24. Rules and waiting times change, so check the official sites before you rely on them.

• Swiss Federal Council (Fedlex): https://fedlex.data.admin.ch/filestore/fedlex.data.admin.ch/eli/cc/2018/32/20240326/de/pdf-a/fedlex-data-admin-ch-eli-cc-2018-32-20240326-de-pdf-a-2.pdf
• Swisscom: https://www.swisscom.ch/en/residential/mobile-subscription/prepaid.html
• Swisscom: https://www.swisscom.ch/en/residential/help/support/newcomers.html
• Salt: https://www.salt.ch/en/help/mobile/join-salt-mobile
• Sunrise: https://www.sunrise.ch/en/support/contracts-and-customer-information/passwords-and-logins/digital-identification
• ETH Zurich: https://ethz.ch/en/studies/international/after-arrival/residence-permit/applying.html
• Federal Office of Communications (OFCOM/BAKOM): https://www.bakom.admin.ch/en/roaming-en