The present disclosure relates to a user equipment-configured to use a plurality of communication services of a mobile communication network, wherein the plurality of communication services are provided by a plurality of network slice instances of the mobile communication network and wherein access to the plurality of network slice instances is controlled by a plurality of access and mobility management functions, AMFs, including a first AMF and a second AMF, implemented in the mobile communication network, wherein the user equipment is configured to register to the second AMF for using one or more of the communication services provided by the one or more network slices associated with the second AMF, while being registered to the first AMF for using one or more of the communication services.