A method performed by a user equipment, UE, having multiple Subscriber Identity Modules, SIM, for simultaneous communication with two or more wireless communications networks, the method comprising: providing, to a first network node associated with a first wireless communications network associated with a first SIM, information on full capability of the UE, wherein the UE is registered with the first wireless communications network; providing, to a second network node associated with a second wireless communications network associated with a second SIM, the information on the full capability of the UE, wherein the UE is registered with the second wireless communications network such that the UE is simultaneously registered with the first wireless communications network and the second wireless communications network; splitting the full capability among the first and second SIMs into a first reduced capability and a second reduced capability; providing a first indication of the first reduced capability to the first network node; and/or providing a second indication of the second reduced capability to the second network node, and characterized in that at least one of the first indication of the first reduced capability and/or the second indication of the second reduced capability is provided in an In-Device-Coexistence, IDC, assistance information in combination with a multiple SIM, MUSIM, indication, and wherein at least one of the first indication of the first reduced capability and the second indication of the second reduced capability comprises an indication of one or more carrier frequencies that are not to be used as compared to carrier frequencies in the full capacity. providing, to a first network node associated with a first wireless communications network associated with a first SIM, information on full capability of the UE, wherein the UE is registered with the first wireless communications network; providing, to a second network node associated with a second wireless communications network associated with a second SIM, the information on the full capability of the UE, wherein the UE is registered with the second wireless communications network such that the UE is simultaneously registered with the first wireless communications network and the second wireless communications network; splitting the full capability among the first and second SIMs into a first reduced capability and a second reduced capability; providing a first indication of the first reduced capability to the first network node; and/or providing a second indication of the second reduced capability to the second network node, and characterized in that at least one of the first indication of the first reduced capability and/or the second indication of the second reduced capability is provided in an In-Device-Coexistence, IDC, assistance information in combination with a multiple SIM, MUSIM, indication, and wherein at least one of the first indication of the first reduced capability and the second indication of the second reduced capability comprises an indication of one or more carrier frequencies that are not to be used as compared to carrier frequencies in the full capacity.