OmniROM. In-call volume too low topic

Build - Version 4.4.2-20140316 N7105
Kernel - based on omni stock kernel.

All my recipients claim that they can't hear me and i can't hear them clearly.. my in-call volume is already at its max.

is there any settings that i need to adjust?

[Q] Modifying in-call screen via AOSP topic

I've read elsewhere that “Developers cant customize the in-call screen because of security concerns”

So, I am trying to understand the functionality of the in-call screen at the source level.

Can any Android devs, especially those that have created their own custom ROMs, tell me which specific classes in the AOSP are responsible for both display and functionality of this screen?

[Q] CM11 maclaw Incall volume bug topic

Incall when switching from or to loudspeaker volume is very low, press vol+ or vol- and goes to normal. the initial volume is ok, and volume setting set to max (or not min) when switch, anyone has this problem ? know solution? only have this problem on CM11 , all other custom roms no problem, i8190 with latest cm11 (tried to install some volume control apps, did nothing)

[Q] Full screen caller or transparency to incall screen ? topic

I have always wanted a full screen incall screen or the transparency in the incall screen to get a full photo of the caller. have seen many ROM's implementing this feature on 4.3 and also on 4.4. Recently many devs have started removing this feature from their builds. Any way i could implement it in my phone ? Any flashable zips for this feature ? I am using Purity Rom currently.