A method of operating a wireless communication terminal in a wireless communication network, the communication terminal comprising at least a first subscriber identity instrument defining a first network operator domain subscription for accessing a first network operator domain, and a second subscriber identity instrument defining a second network operator domain subscription, different from the first network operator domain subscription, for accessing a second network operator domain, a respective network operator domain covering an access domain, a network domain and/or a service domain, wherein the access domain comprises a communication network access infrastructure of a licensed network operator, the network domain comprises a core network infrastructure of the licensed network operator, and the service domain comprises a service network infrastructure of the licensed network operator, the method comprising: • the communication terminal requesting a first network operator domain attachment procedure for attaching to the first network operator domain by activating the first subscriber identity instrument, the attachment procedure including authenticating and authorising a first subscriber identity of the first subscriber identity instrument at the first network operator domain; • the communication terminal requesting a second network operator domain attachment procedure for attaching to the second network operator domain by activating the second subscriber identity instrument, the attachment procedure including authenticating and authorising a second subscriber identity of the second subscriber identity instrument at the second network operator domain; and • the communication terminal camping on only one of the first and second network operator domains at a time for communicating in the communication network, the camping comprising listening to a broadcast channel of a respective network operator domain, wherein, after the first and second network operator domain attachment procedures, the communication terminal remains simultaneously attached to the first and second network operator domains while operating on only one radio frequency at a time for communicating in the communication network, the method being characterised in that the method further comprising: • receiving, in response to a network overlay operator domain, referred to as a third network operator domain, detecting that at least one camping switch criterion has been fulfilled in the communication network, a command from the third network operator domain to initiate a camping switch from the first network operator domain to the second network operator domain or vice versa, the command being received via an over-the-air programming platform of the first or second network operator domain, or over an internet protocol connection by using a control application in the communication terminal, wherein, from the services point of view, the first and second network operator domains are slave domains, and the third network operator domain is a master domain having control over the slave domains, and the third network operator domain knows on which operator domain the wireless communication terminal is currently camped. • the communication terminal requesting a first network operator domain attachment procedure for attaching to the first network operator domain by activating the first subscriber identity instrument, the attachment procedure including authenticating and authorising a first subscriber identity of the first subscriber identity instrument at the first network operator domain; • the communication terminal requesting a second network operator domain attachment procedure for attaching to the second network operator domain by activating the second subscriber identity instrument, the attachment procedure including authenticating and authorising a second subscriber identity of the second subscriber identity instrument at the second network operator domain; and • the communication terminal camping on only one of the first and second network operator domains at a time for communicating in the communication network, the camping comprising listening to a broadcast channel of a respective network operator domain, • receiving, in response to a network overlay operator domain, referred to as a third network operator domain, detecting that at least one camping switch criterion has been fulfilled in the communication network, a command from the third network operator domain to initiate a camping switch from the first network operator domain to the second network operator domain or vice versa, the command being received via an over-the-air programming platform of the first or second network operator domain, or over an internet protocol connection by using a control application in the communication terminal,