T-Mobile: Activate a new SIM card - so it'll work

If you want to use the new SIM card from T-Mobile, you must first activate it. We'll show you exactly how to do this.

Activate the T-Mobile SIM card

• If you are a new customer at Telekom and have received your SIM card by post, it will be activated automatically after 24 hours at the latest.
• If you have previously been a Telekom customer, simply call the free hotline on 0800 33 02202. Your SIM card is activated here directly.
• Alternatively, activation also works online. Open the following T-Mobile website and log in with your customer data. You will be redirected to activation.

In the next practical tip, we will show you how to query your data volume at T-Mobile.