Unhappy [Q] dogee dg350 audio volume.

Hi I have problem when i calling I ear very bad and low the other side in the phone call...
I search the problem and found that i can change the limit with mobileuncle tool but it didn't work cuase I don't know what I need to choose so I still can't ear good...
please if any1 have this phone can give me the right levels for it ? so I can ear well...I need only the thing when in phone call - so I can increase volume to ear better the other side who talking with me....
Thanks!