I found the root cause. on Mac 12, I need to change the function scan bluetooth device
NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:YES], CBCentralManagerScanOptionAllowDuplicatesKey, nil];
[self.CM scanForPeripheralsWithServices:nil options:options];
before I only use function
[self.CM scanForPeripheralsWithServices:nil options:nil];
So, I'm not sure this is new feature or bug on Mac 12. Because set CBCentralManagerScanOptionAllowDuplicatesKey will affect to battery of device.
nguoithichkhampha
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