Please integrate Xiaomi Mi Band 9 
I used the Mi Band 3 for about 10 years without any problems, today I have a new Mi Band 9 and it is not possible to connect it, I am unhappy.
Thank you very much for your help. Your app is absolutely top and I would like to keep using it.
Michaela
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Hi @Gaim_Play, the integration with all MiBands depends on the companion apps.
Xiaomi does not allow direct integration, and there is no public-facing API we could use to integrate their bands. The only way to connect MiBands with Sleep is one of the companion apps, that overcomes the missing API with tons of hacks and reverse engineering (BT Sniffing method).
Which companion app do you have - Tools or Notify?
I think your only option currently is by using Notify for Mi Band along with Sleep as Android. But first you also need Mi Fitness to get an Auth key. You then set up the band in Notify with the key and it technically works… kind of. The Notify app is abysmal and constantly disconnects/reconnects, dies, doesn’t find the band and has a terrible UI.
The integration is not optimal, because Xiaomi puts active obstacles for the unofficial integrations. Every update can break the Notify connection. The method that needs to be used is Bluetooth sniffing, and it is extremely complicated.