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Help & Service for business customers

Help with mobile phone problems

If your smartphone or tablet cannot connect to a wireless network, you experience intermittent disconnections or slow internet speeds, there may be several reasons for this. We have compiled a list of helpful tips and solutions for you.

Mobile phone interference on the display of a smartphone

Simply select what exactly it is about



If none of this has helped:

Please feel free to speak to our colleagues in customer service. They will also be able to tell you whether there is actually a fault in the Telekom network and what the status of the repair work is.

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Internet & landline

Check whether your Internet and landline connection is disrupted and report the fault directly to us online.

Check your internet & landline connection
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Mobile devices and configurations

We will help you configure your devices, SIM card, mobile mailbox and fixed IPv6 address.

More about devices and configurations
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Devices and configurations Internet & landline

Useful information about devices and configurations, IP connections and special services – compact and easy to understand.

More about devices and configurations

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To send us an email, simply use our contact forms.

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