Audio volume level is too low in iphone, working in ipad

Hi,

We developed a game in Unity5.1.2, having a game for audio song recording with background track playing, when microphone starts recording using Microphone.Start() function, audio volume level of background track playing in the game is too low for iphone devices (tested in iphone 5s) and working fine with ipads.

Included the following fixes for it

1) importing UnitySpeakerFix unity package and called iPhoneSpeaker.ForceToSpeaker ()

2) Checked/Unchecked Prepare iOS for recording option in build settings.

Those fixes doesn't helped out. Could anyone help me to sort this out.

Please find the post from unity answers,

http://answers.unity3d.com/questions/1166301/audio-volume-level-is-too-low-in-iphone-working-in.html

Regards, Ben