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Roaming: Using your phone abroad

Internet, calls & SMS abroad

Your phone abroad & in the Swiss border area

Even abroad you are always reachable under your mobile number. You can call, send SMS and surf the Internet as usual. 

Check the benefits of your subscription by country:

Don't know your mobile subscription? Check your subscriptions in the Customer Center.

What are roaming days?

Roaming days in EU/Western Europe Andorra, Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Faroe Islands, Finland, France, Germany, Gibraltar, Greece, Guernsey, Hungary, Iceland, Ireland, Isle of Man, Italy, Jersey, Latvia, Lithuania, Luxembourg, Malta, Monaco, Netherlands, Norway, Poland, Portugal, Romania, San Marino, Slovakia, Slovenia, Spain, Sweden, United Kingdom, Vatican City State

Residential customers with inOne mobile or NATEL infinity 2.0 subscriptions and SME customers with inOne SME mobile or NATEL® infinity 2.0 business subscriptions have a certain number of days included in their mobile subscription. During those days they can use the Internet, make phone calls and send SMS messages in the EU/Western Europe at no additional cost.

You can check your roaming day balance in the Swisscom Cockpit at


You have an inOne (SME) mobile M subscription

If you have an inOne (SME) mobile M subscription, you can write SMS, make phone calls and surf for 6GB during 60 days in the EU/Western Europe at no extra cost. If you use your roaming days and 6GB data allowance at different speeds, one of the following can happen:

Example 1: You have used up the 6GB data allowance before using the 60 roaming days:

Example 2: You have purchased a data package. Two days later your subscription is renewed:

Roaming outside of EuropeThe inclusive units apply to all countries outside the EU/Western Europe. With the exception of: Afghanistan, Angola, Bahamas, Belize, Bhutan, Burundi, Cuba, Djibouti, East Timor, Ethiopia, French Polynesia, Guam, Liberia, Libya, Mali, Nepal, New Caledonia, Zimbabwe.

The roaming days cannot be used outside the EU/Western Europe. If you have an inOne (SME) mobile XS - L subscription, you have 1000 SMS/MMS per month and 100MB per year included in your subscription. If you want to use the internet or make phone calls outside Europe, we recommend that you buy a data package and/or use the Travel Voice Option for cheaper phone calls.

Validity of roaming days

  • Roaming days are valid from the start, down/upgrade or renewal of your mobile subscription and are automatically renewed after 365 days.
  • A roaming day is deducted when you make or receive a call, send or receive an SMS, send or receive an MMS, use data traffic (e. g. surf the Internet or send e-mails)
  • Roaming days are charged by calendar day in Swiss time and end midnight (UTC+1/ summer time applies).

Manage your usage & COMBOX® abroad

You can check your current usage for surfing abroad at any time via the Swisscom Cockpit. The current usage for phone calls and messages are shown in the Customer Center with a delay.

If you use your COMBOX® abroad, increased costs may be incurred or roaming days may be charged: If you do not accept a call and the COMBOX® switches on, an incoming connection and an outgoing connection (for accepting the call through COMBOX®) will be charged.

Therefore, we recommend that you switch off conditional call forwarding to your COMBOX® (if you do not answer):


  1. Open the cockpit at
  2. Click on "Call settings".
  3. Switch off "Incoming Call Forward".
  4. Click on "Save".

Your prepaid abroad

You can also use your prepaid mobile phone to make calls, send SMS messages and surf the Internet in most countries. Rates vary by country. We recommend that you check them before you leave for your trip:

If you use your prepaid phone frequently abroad, it may be worthwhile to buy a data package or a Travel Voice Option.


What is roaming?

Why can't I go online?

How can I go online abroad without wasting money?

How can I make cheap calls when I am abroad?

How much does it cost to send or receive SMS abroad?

Can I make calls abroad via a WLAN access (so-called Wi-Fi calling)?

I was charged for roaming even though I wasn't abroad. Why?



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