Same problem to me. I've got 
2x Taotronics BT Sportsheadset
1x JBL Headset
1 x Pioneer Car Audio
1 x Xiaomi speaker
Regulary the BT-Conncetion get lost so I've to reboot the phone. 
And yes, it has the latest firmware with a factory reset afterwards. It is a "bit" annoying with this BT...

Such issue has been sent to tech team for a fix, don't worry.

Hello!
Is there any solution to the problem? It is preatty annoying, that the bluetooth is loosing contact for a minute and reconnect time to time if the screan is off, however if the screen is active, for exaple I use a GPS program, the the connection is fine.. 

MezoTD wrote:

Hello!
Is there any solution to the problem? It is preatty annoying, that the bluetooth is loosing contact for a minute and reconnect time to time if the screan is off, however if the screen is active, for exaple I use a GPS program, the the connection is fine.. 

What bluetooth device is 6800Pro using

Same, problems with hands-free parrot its disconect in the middle of a call. Any solution?

Diego wrote:

Same, problems with hands-free parrot its disconect in the middle of a call. Any solution?

Hello, what problems?