The QBluetoothDeviceDiscoveryAgent first runs a classic Bluetooth scan and once this scan is done the Low Energy scan is started. This causes problems with multimode Bt device. Furthermore the scan takes uneccessary time if the user knows that he is only interested in Low Energy devices.

The QBluetoothDeviceDiscoveryAgent::InquiryType should be extended to allow the user to only scan for BTLE or classic devices.