I recently purchased a P6000 and encountered a few little problems, one of which is causing a bit more problems than others.
When I first got the phone, the alarm clock was not ringing at all, leading me to miss my wake up time and late for work etc.
Fiddled around a little bit with the notifications etc, now I finally got my 6:15am alarm working, however, I also have a 6:30 alarm (in case I shut off the first one), but when I woke up this morning, the 6:30 alarm did not go off, but rather, only having a notification saying missed alarm. I'm 100% sure that the alarm did not go off, so that means there must have been some issue with the software.
Raising this as a concern for not only P6000, but for all Blackview phones, to shift your focus away from the hardware for a moment, and concentrate your investment into the software.
I see a lot more problems being raised with the software rather than the hardware, please look into the softwares of your smartphones and bring in excellent new fixes soon.