I’m trying to keep Bluetooth SCO mode on for longer than 6 sec. time, for recording audio from it and playing some sounds in same time, anytime. It’s not a call, it’s just local communication (“hands free”) for recording quite short messages with audio feedback when time-limit or smth happens in background during recording. Feature must work immediate and I see on variety of devices that switching between default A2DP and SCO takes 1-few secs – thats unacceptable for my case