Why didn't mi band shake when the text message came?

First, please confirm whether the Bluetooth of the mobile phone is turned on and connected to the bracelet.

Secondly, for non-miui and ios systems, please check whether the bracelet APP is running (just run in the background). )

Tip: One-click memory cleaning and some housekeeping software may clean up the process or intercept it. Please add Xiaomi Sports App to the white list.