Here are some solutions for fixing several reported issues with the BV8000 Pro:

The camera is out of focus and the images blurry / The picture is "White out": Should be solved in 20170718. Update to the latest ROM (20170718 or later) and perform a factory reset after that. Alsways use your finger to tab the focus point in the camera app.

NFC doesn't work: Update to the latest ROM (20170718 or later) and perform a factory reset after that. If this don't work contact your seller for receiving a replacement device.

Problems with the bluetooth connectivity: Update to the latest ROM (20170718 or later) and perform a factory reset after that. If this don't work contact your seller for receiving a replacement device.

In bright light, the contrast of the Screen changes: Should be solved in 20170718. Update to the latest ROM (20170718 or later) and perform a factory reset after that

Every few hours the phone freezes or reboots: Update to the latest ROM (20170718 or later) by clear flashing and perform a factory reset after that.

If your microphone volume is very low in calls try to disable "ok google" feature. It may be a rarely occurring bug in google's software.