Using headphone while using extended battery case(back cover removed)

dennnnnnnis

Member
Feb 5, 2013
10
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Has anyone noticed that the metal connector on the backcover(the two metal pin on the volume rocker side) is responsible for the phone to recognize if it's headphone or aux?

Anyway, I'm using a extended battery case and there's no metal connector on the back cover. And the phone would only recognize aux mode when I plugged in my headphone, which for some reason only have sound on the left channel. (You can try plug in the headphone and remove the back cover and it would turn off the right channel.)

I'm using a f800k btw. And my phone is rooted and modded to have high impedence always on.
Can someone explain this and Is there a software fix for this?

Many thanks:)