Hi, after flying a lot recently, I noticed the speaker not working or being very quiet during phone calls, the external speaker seems fine, it is just the inside/ear speaker, it has cleared up since, but having the port seals open during flights, makes no difference. I believe using a bluetooth headset reset the issue as it has been behaving for a couple of weeks now.
Anyway, this is not my gripe here.. I have also been having a recurring problem where my phone restarts randomly, over and over, then it will suddenly stop doing it, then a few days/week later, it will randomly start rebooting again. the first time this happened was at the airport, before my first flight with the phone. It just finished doing it this morning when I left to drop my wife off. This is strange. I have Android 7 and all up to date as far as BV updates are concerned.
Is anyone else experiencing this, or does anyone have any solutions for it.
I'm considering going to CyanogenMod if they have a ROM for this phone.

The Android 7.0 is not stable, would you like to get 6.0 back? here is the link: http://www.needrom.com/download/blackview-bv6000-4/

I experienced similar continuous-rebooting (with Android 7.0 only) when I'm in Hong Kong Science Park with WIFI turned on. In other places, this problem doesn't happen. I suspect there is some kind of WIFI protocol not handled by the phone WIFI driver.

My BV6000 exepriences occasional reboot too. Curiously, thy up-time doesn't reset but the 'instruction' widget gets displayed on top and when closed, the desktop draw its icons. Strange. I'd be happy to disable this 'instruction' overlay for good. It's of no use for me.

The matter of SILENT SPEAKER AFTER FLIGHT comes from the phone's hermeticity and is already known. To overcome, fly with opem USB or headphone seal or open it after landing to equalize internal air pressure which blocks the speaker.

I have multiple problems as well, the random crashing and some apps completely not working entirely makes me want to roll back to android 6.0 and disable updates. one of my first posts never got launched on the website with a list of problems that i had during the last version of the released 7.0. I need a different pc than my windows 10 laptop, because it refuses to recognize the phone at all anymore. not even after driver installations etc. I also enabled usb debugging.

Guess they haven't extensively tested the system before rolling out the android 7.0 version. Hope they will do more testing before releasing more 'updates'. the latest android 7.0 update/fix fixed absolutely nothing for me.