At Android 7, Bluetooth is sometimes not connected

[???]

When we develop Bluetooth products, we find that in Android 6 APP, Bluetooth devices can connect normally, but at Android 7 or above, sometimes it doesn't connect to Bluetooth. Is this related to your SDK? Now I use SDK10.0.

[SRA]

You’ll get a lot more help if you post a sniffer log, so someone can tell you what is happening.