SERVICE DATA TRANSMISSION METHOD AND RELATED DEVICE

This application provides a service data transmission method and a related device, applied to a mobile phone. The method includes: establishing a first Bluetooth logical channel with a first main control chip of a wearable device and a second Bluetooth logical channel with a second main control chip of the wearable device, where the first main control chip and the second main control chip have different processing capabilities and energy consumption; and sending, based on an interaction channel corresponding to a service, service data to the first main control chip through the first Bluetooth logical channel, or to the second main control chip through the second Bluetooth logical channel. In this application, a channel for transmitting the service data from the mobile phone to the wearable device may be determined, thereby reducing a quantity of times of waking up a main control chip with high energy consumption in the wearable device, and improving standby time of the wearable device.