At maximum volume I still struggle to hear what people are sying
How do I increase the volume setting in engineering mode?

Here you go!

https://www.techulk.com/how-to-increase ... me-on-any/

https://www.scribd.com/doc/196420310/Ad ... ering-mode

https://forum.xda-developers.com/showth ... ?t=2248396

The speaker on my P10000 has stopped working.  I tried following the instructions in these links but I nothing has changed.  In fact, I can't even find the loudspeaker settings in the MTK Engineering Mode menu - my screen is quite different.  Can you suggest other ways to diagnose and/or correct this problem?  Thanks.

It really looks like an hardware fault.... you'll have to contact your seller to have your device replaced under warranty.

Hi

Your engineering mode options are very different to mine
- Hardware testing -> Audio ->Volume -> Voice-> ??????????

Please advise

People phoning me now complain that there is a lot of echo on the line

I would also like to reset the volume settings in the engineering mode - please explain how to do that

to reset volume settings in engineering mode, just perform a factory reset of your device.
Start considering about an hardware fault, to be managed by contacting your seller for a replacement under warranty.

Hi

Please respond to my post from a week ago.
I mentioned that my engineering is different to the one's that you posted

- Hardware testing -> Audio ->Volume -> Voice-> ??????????

Please explain which variables to I increase?

Thank you

A specific tutorial will come soon.

Did the blackview P10000 only had 1 speaker on the phone? 
I just got mine 3 days ago and the seller said that the phone only had one speaker and the other sound grill only just for decoration purpose.

Thank You