Abstract: An operation mode switching method and user equipment are disclosed, so that an operation mode of the user equipment can be automatically switched. A specific solution is: determining, by user equipment, that a current data transmission rate of the user equipment is less than a first rate threshold, and/or a battery temperature of the user equipment is greater than a first temperature threshold; determining, by the user equipment, that the user equipment is in a CA operation mode; changing, by the user equipment, a transmission mode parameter of the user equipment to a transmission mode parameter corresponding to a non-CA operation mode; and restarting, by the user equipment, a communications module of the user equipment, and sending a first access request to a base station, where the first access request carries the transmission mode parameter corresponding to the non-CA operation mode.

Abstract: An operation mode switching method and user equipment that relate to the field of communications technologies are disclosed, so that an operation mode of the user equipment can be automatically switched. A specific solution is: determining, by user equipment, that a current data transmission rate of the user equipment is less than a first rate threshold, and/or a battery temperature of the user equipment is greater than a first temperature threshold; determining, by the user equipment, that the user equipment is in a CA operation mode; changing, by the user equipment, a transmission mode parameter of the user equipment to a transmission mode parameter corresponding to a non-CA operation mode; and restarting, by the user equipment, a communications module of the user equipment, and sending a first access request to a base station, where the first access request carries the transmission mode parameter corresponding to the non-CA operation mode.

Abstract: A wearable device includes a device carrier, a device core unit, a first universal serial bus (USB) interface, a second USB interface, and a signal path selection unit. The device carrier is configured to carry the device core unit, the first USB interface, the second USB interface, and the signal path selection unit of the wearable device; the device core unit is configured to perform a core function of the wearable device; the first USB interface and the second USB interface are configured to connect to an external device; the signal path selection unit is configured to control a signal path between the first USB interface and the device core unit or a signal path between the first USB interface and the second USB interface to be connected.

Abstract: A wearable device includes a device carrier, a device core unit, a first universal serial bus (USB) interface, a second USB interface, and a signal path selection unit. The device carrier is configured to carry the device core unit, the first USB interface, the second USB interface, and the signal path selection unit of the wearable device; the device core unit is configured to perform a core function of the wearable device; the first USB interface and the second USB interface are configured to connect to an external device; the signal path selection unit is configured to control a signal path between the first USB interface and the device core unit or a signal path between the first USB interface and the second USB interface to be connected.