Abstract: The present invention relates to a method and device for activating a subscription in a cellular network comprising a register unit for a cellular network, said register unit storing at least one unique identity number which identifies a subscriber identity module. The stored identity number is registered in a cellular network subscription. The method is further characterized in the steps of: the register unit receiving the unique identity number for a subscriber identity module when the module is activated, and the register further assigning an authentication number with the received identity number—so that it defines the registered subscription.

Abstract: The present invention relates to a method for enabling a called party to optionally pay for a call or service, or parts of a call or service (hereafter, a call or service will only be designated as a call) initiated by a calling party. In an exemplary embodiment of the present invention, when call is set up in a telephony network by a calling party, in case of call prepay, it will be determined if there is money on an account used for call prepay, accessible from the network. If there is not, the called party will be prompted whether he/she accepts to switch charging direction or not. If the called party accepts, he/she will be charged for the call. In the opposite case, the call will be disconnected. The called party can also at any time switch the direction of the charging during a call for which the calling party at the time being is paying. In addition, the present invention gives the subscribers opportunity to create a list of accepted charging called parties.