Yes, but the minimum service duration is only 60 days per phone number, starting from the initial activation of one of the main rates (swype Swiss, swype Surf and swype Europe).
If one of the main rates is deactivated during the minimum service duration, the rate will remain active until 60 days have expired and will be billed accordingly.
After the minimum service duration has expired, the activated main rate can be deactivated at any time as of the end of its term.
There is no minimum service duration for the additional rates (swype International and swype Roaming). You can activate these as a service option at any time and deactivate them as of the end of the term.