O2 Hotline: How to reach customer service

Telefónica Deutschland Holding AG sells mobile and fixed lines under the name O2. If you have a problem with your tariff or connection, you can reach O2's customer service via the hotline.

How to reach O2 customer service via the hotline

If you have questions or problems with your tariff or contract, there are different ways to reach O2 customer service. A distinction is also made as to whether you are a contract customer or a prepaid customer of the company.

• As a contract customer, you can reach customer service from the O2 network via the hotline 55 22 2. The call is free of charge and also intended for prepaid customers.
• From the fixed network except out you have to dial as an O2 customer the 089 78 79 79 20 0 to be able to reach the support free of charge.
• If you want to reach the customer service via another mobile network, the O2 hotline 0176 88 85 52 22 applies to you instead.
• You can also call the hotline from abroad. However, this is then the 0800 66 99 96 6. As a prepaid customer, you must dial here the 0049176-88855282. The cost of the call depends on your tariff.
• If you want to activate your card as a contract customer, then dial the 08006699966 The call is completely free.
• Also important is the 0800 10 15 849: Diese Nummer können Sie für die Kündigung Ihres Vertrags benutzen.