How Mi Band / Amazfit button works - Button is not working
Mi Band 3
Mi Band 3 doesn't support button natively, we have added an alternative method to allow fire custom button actions.
To trigger a button action you have to turn on/off the heart monitor on your Mi Band
To trigger 2x and 2x button actions you have to repeat 2 or 3 times the whole procedure (on/off heart monitor for 2/3 times)
Watch the video tutorial
Mi Band 2 / Amazfit Bip / Amazfit Cor
Just tap the button a first time to turn on band display, then press button again to fire 1x button action.
Music player app: we suggest keep selected default option "Next music track" to get app working with any music player app. If you are getting troubles with the generic option, try select the dedicated menu option like "Next music track - Google Music" or contact the support.
We recommend these settings (default) to get button working correctly