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Help & Service for business customers

SIM/eSIM

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Find out everything you need to know about your SIM/eSIM

Whether it's a traditional SIM card or an eSIM in your device, the SIM connects you to our network. This means you can make calls and surf the internet anytime, anywhere, without being tied to a specific location.

We are happy to help you with any questions you may have about SIM cards – simply select whether you would like to find out more about ordering (including exchanges), activating, unlocking/blocking or further assistance (e.g. regarding PIN/PUK).

How can we help you with SIM/eSIM?

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Get all the important information you need to take over an existing contract – compact, understandable and in one place.

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Manage contract and customer data

Learn how to manage your contract and customer data.

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