Hi, i have purchaced bv9900 pro and it has barometer/altimeter offset. I go to sea level and my altimeter shows -157 meters The barometer on the other hand shows 1025 right now (davis vantage pro aspirated meteo station swows 1030) In my casio watch it is possible to do callibration by going to sea ...

Same here on my bv6000.
BV6000_Blackview_V01_20161216
Android 7.0
Location Greece,bought from official retailer here in Greece.
I also have a problem when restarting my phone, or shutting down the sound of incoming call resets to default.