Before you start your trip abroad, you must set your roaming limits for surfing and calls/SMS/MMS in the Swisscom Cockpit under “Costs”. Make sure you have enough credit left from your data allowance. If you don't have a data allowance included in your subscription or you have already used it, you need to purchase a data package before you travel.
The simplest way is to switch to a mobile subscription that includes an allowance for Internet, calls and SMS/MMS abroad. If your subscription does not have a data allowance or you have used your credit before you travel, you need to purchase a package so that you can use your mobile phone abroad. These packages are valid for 12 months so you have a year to use the credit you purchase.
Check the tariff overview to see the costs for using your mobile phone abroad. You can select your destination and your mobile subscription to see at a glance how much credit the different subscriptions include for surfing, calls and SMS/MMS. You can find your available credit and your current roaming limits in the Swisscom Cockpit.
Shortly before you reach your roaming limit for surfing or calls/SMS/MMS, you will be notified by SMS (with 20% credit remaining). Once the limit is reached, you receive another SMS, after which calls and mobile Internet will be interrupted. For your cost security, you can only surf and make calls again once you have increased your roaming limit in the Swisscom Cockpit.
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