Service Menu to Increase Headphone Volume - Nexus 6P Q&A, Help & Troubleshooting

Did anyone find a way to access the service menu to Increase Headphone volume? I am not rooted. So service menu is my only option to Increase the volume.

I use the Hearing Aid option in google dialer...
Phone/settings/accessibility

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[Q] Earpiece volume too low

My earpiece volume too low.
I have hard time hearing people talking on the phone when outside of the house.
Anyone have any idea how to fix this ?
I have max out the volume in the setting even send to replace for another set.
It is the same.
There is a tweak with the secret service menu, BUT unfortunately the new settings cannot be saved so it is useless.
Indeed, the earpiece is crap (in terms of volume, not quality), the same for the speaker. I wish there was a permanent tweak...
There is HAC for vibrant. hoping there is a hack for SGS .

MTK Engineering-How to increase Speaker(handset) volume levels during a conversation?

MTK Engineering-How to increase Speaker(handset) volume levels during a telephone conversation?
I have a problem with the volume during a call
I installed the MTK Engineering (Google Play) on my Goclever Quantum 4.
I was trying to increase the volume.Unfortunately, there are a lot of shortcuts that do not understand (sip, sph, etc.).
I tried to change the value of an intuitive way.
After either try and restart the phone I set a good level of the earpiece volume during a call.
Now I do not know how I did it?
Can someone explain to me step by step how to with program the MTK Engineering increase the volume level during a call on the handset (not the speaker or the headset).
How to increase only the level of the handset without adding other levels?
I will be grateful for your help.
Regards

How to increase the microphone volume?

I have already gone through http://www.modaco.com/forums/topic/314939-req-default-audio-gain-settings/ and http://www.modaco.com/forums/topic/319300-how-to-increase-volume-on-headphones-in-omnia-2/ . There they explains about auto gain control. It was all a head ache. What I want is simple. When I connect my "headphone" (no headset), I use to talk using my phone's inbuilt mic. But my voice becomes feeble comparing to the normal talk without headphones. The other persons are able to listen to my voice in less clarity compared to normal talk. I want to increase volume of mic (not speaker) when I connect headphone and talk. There is no problem with the speaker volume. Auto gain control setting is not there in the settings, and is accessed through code *#0002*28346#. How can I increase my mic volume alone?
Thanks in advance

Low volume call with earphones

I don't know if it's only me, but this volume call using earphones is very low, I can barely ear the other side.
As I've to use them for professional purposes, I'm asking if I can change any configuration to increase the volume call.

Low bluetooth volume and in call volume

Does anyone know how to increase the bluetooth volume and the in-call volume.
I use the same bluetooth headset that I used to have on my s7 and I find the bluetooth volume way too low even though the slider is at the max setting.
Also the in-call volume is low as well.
Is there any service mode where we can change the default volume value or any hidden setting.
I have the original firmware without root G950W
prince_72 said:
Does anyone know how to increase the bluetooth volume and the in-call volume.
I use the same bluetooth headset that I used to have on my s7 and I find the bluetooth volume way too low even though the slider is at the max setting.
Also the in-call volume is low as well.
Is there any service mode where we can change the default volume value or any hidden setting.
I have the original firmware without root G950W
Click to expand...
Click to collapse
I have this same issue on my note 8 did you get it resolved?
Actually I am not sure if it is completely resolved.
Are you using a lot of bluetooth headsets?
Try to use another headset, put the volume half way, unpair the bluetooth that you are having the problem and then repair it.
I think sometimes I have a bit higher volume.

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