I have viewed many unofficial MiBand SDKs in Github. (e.g. https://github.com/Freeyourgadget/Gadgetbridge) None includes detect when button touching, but I have viewed apps to detect this feature. For example Mi Band 2 Func Button.
Also I have tried sniffing bluetooth data traces, but just show data because mobile device is not rooted and I haven't rooted. Is there any way I can detect the touch of a miband button? Thanks a lot!