Disclosed is a UE and a method for controlling the UE. The UE includes: an input/output (I/O) module, configured to display an intelligent-shutdown-mode setting interface, where the intelligent-shutdown-mode setting interface includes a setting option for shutting down/starting a radio frequency chain of the UE, obtain setting information of the user on the intelligent-shutdown-mode setting interface, and send the setting information to an intelligent shutdown module; the intelligent shutdown module, configured to receive the setting information sent by the I/O module, modify wireless transmission capability report information of the UE according to the setting information, send modified wireless transmission capability report information to a communications module, and shut down/start the radio frequency chain of the UE; and the communications module, configured to receive the modified wireless transmission capability report information that is sent by the intelligent shutdown module, and send the modified wireless transmission capability report information to a base station.