When you order your SIM card for the first time, you have to choose between Flat 0.4, Flat 10 and Flat 300. 

In return, you get one month free to test our offer. Once you have activated your SIM card in our customer portal, you can make precise adjustments to your subscription. 

Then you also have the option to choose the Flat 1 or the Flat 50 subscription. 

Subscription upgrade:

A subscription upgrade to a higher speed package is always possible immediately. When you upgrade, your SIM card is immediately activated for the faster data package. The upgrade will be charged "pro rata", we will deduct the remaining credit of your already booked data package from the new data package. If you activate a voice package on your SIM card, your data subscription will automatically be extended by 30 days so that your data subscription and your voice option have the same duration. Your Voice Option will not work without an active data subscription.

For example: 

The current data package is a Flat 10 monthly/annual package, the upgrade Flat 50 is a monthly/annual package. → Upgrade will be performed directly.


Subscription downgrade: 

A subscription downgrade to a lower speed package is only possible after the expiration of your selected data package, which runs for 30 days or 365 days. This means that the lower data package will not be booked on your SIM card immediately, but only after the remaining term of your current data package has expired. The voice option can be deactivated at any time, if the option is deactivated, the existing voice credit (number of days) will still expire, after that the voice option will no longer be extended. 

For example:

The current data package is a Flat 50 month/year package, the downgrade is a Flat 10 month/year package. → The downgrade will only be carried out after the Flat 50 monthly package has expired.