An apparatus arranged to be comprised in a base station (150, 304, 404) for user equipment, UE, radio capability signaling, the apparatus comprising circuitry configured to: manage communication with a first UE (101, 302, 402, 700) as part of an initial attach procedure, wherein a first set of UE capability information is established as part of the initial attach procedure; identify a first temporary operating mode for the first UE (101, 302, 402, 700) associated with a second set of UE capability information, the first temporary operating mode being sent by the first UE (101, 302, 402, 700), wherein temporaiy operating modes are one of: a normal mode, a low data rate mode and a limited mobility mode, the temporary operating modes identify different subsets of UE capabilities to a network, and the temporary operating modes may be switched so that a single UE can operate in a different mode at different times with different subsets of the UE's capabilities active; initiate communication, in response to identifying the first temporary operating mode for the first UE (101, 302, 402, 700), of a UE mode match indication message from the base station (150, 304,404) to a mobility management entity, MME, (160, 306, 406), wherein the UE mode match indication message comprises the first temporary operating mode; receive, at the apparatus of the base station (150,304,404), a UE mode match response from the MME (160, 306, 406), wherein the UE mode match response comprises a temporary operating mode of the UE (101, 302, 402, 700), stored in the MME (160, 306, 406); initiate communication, in response to receipt of the UE mode match response, of a UE capability enquiry from the base station (150, 304, 404) to the first UE (101, 302, 402, 700); and receive, at the apparatus of the base station (150, 304, 404) from the first UE (101, 302, 402, 700), a UE capability message comprising the second set of UE capability information. manage communication with a first UE (101, 302, 402, 700) as part of an initial attach procedure, wherein a first set of UE capability information is established as part of the initial attach procedure; identify a first temporary operating mode for the first UE (101, 302, 402, 700) associated with a second set of UE capability information, the first temporary operating mode being sent by the first UE (101, 302, 402, 700), wherein temporaiy operating modes are one of: a normal mode, a low data rate mode and a limited mobility mode, the temporary operating modes identify different subsets of UE capabilities to a network, and the temporary operating modes may be switched so that a single UE can operate in a different mode at different times with different subsets of the UE's capabilities active; initiate communication, in response to identifying the first temporary operating mode for the first UE (101, 302, 402, 700), of a UE mode match indication message from the base station (150, 304,404) to a mobility management entity, MME, (160, 306, 406), wherein the UE mode match indication message comprises the first temporary operating mode; receive, at the apparatus of the base station (150,304,404), a UE mode match response from the MME (160, 306, 406), wherein the UE mode match response comprises a temporary operating mode of the UE (101, 302, 402, 700), stored in the MME (160, 306, 406); initiate communication, in response to receipt of the UE mode match response, of a UE capability enquiry from the base station (150, 304, 404) to the first UE (101, 302, 402, 700); and receive, at the apparatus of the base station (150, 304, 404) from the first UE (101, 302, 402, 700), a UE capability message comprising the second set of UE capability information.