The solution and comments:
First the solution: in the next video ... in minute 6:07 you can see the easy process for solve:
https://www.youtube.com/watch?v=Q0FknexwDLQAnd my suggestion is install Camera MX, was the better option for me.. but I suppose that maybe exist better... but with this the camera work better with anothers applications.Comments:
I had the problem... seach and seach... no one of blackview say the solution... after months...

I want return the smartphone... but pay for back is more expensive that smartphone for me... 200 dollars... maybe you have the same problem... and don´t want lose money...
I now find this solution... I´m very happy...
Now is ok... but I´m testing the solution, please BlackView say a programmer make a automatic clean of cache, each time that the camera is open.... because now is using data of olds photos.
A lot of months to say that need time...

Now I´m searching solutions to 1 sim card + 1 memory micro sd ... don´t work join... I suppose that I will be find the solution before someone oficial solution
