[i9505 S4 4g] Automatically set's Phone Calls to "Bluetooth(mono)"

My S4 4.4.2 stock, isn't work the earpiece and mic, as suggested i've installed the SoundAbout app, but it's setting automatically the Phone Calls to "Bluetooth Mono" and still with no audio in phone call, only in rear speaker if i activated it, i've already tried to put to earpiece in the phonecall setting and apply the Bluetooth Behavior settings, but i stiil have no sound in my Phone Calls.

any solution, light, way or fix to this ?

You may have a hardware issue where the phone "thinks" a wired headset is plugged in when it is not. This will disable the earpiece and built-in microphone.
The phone calls should only get automatically switched to Bluetooth mono if there is a Bluetooth "phone call" device connected to the phone. This should happen even if SoundAbout was not installed.

If the phone has the issue were it thinks a wired headset is being plugged in (could be lint in the headset jack hole), then try the following:

1] Clear all the settings and go back to default, and install new Beta.
You can do this by going into phone settings, then manage apps, scroll to SoundAbout, click on SoundAbout, clear cache, clear data, click Force stop, and click un-install.

2] Download and install Beta from here:
https://soundabout.forumotion.com/f8-download-beta-versions

3] Open SoundAbout. Click on "Connectable devices". Click on "Wired Headset settings".
Un-check the "Wired headset detection".

4] Reboot phone.

See if that helps. If not, you may have a more serious issue with the phone.

Similar thread here:
https://soundabout.forumotion.com/t13-main-speaker-ear-speaker-and-or-microphone-not-working

Thanks for the reply, but didn't worked

It's hard to say if it is a hardware or software issue. If you are good at following instructions and semi-technical, you could try to root it with a new ROM/kernel.

Some people have gotten their phone to work that way.

A great place to look for information is this forum:
http://forum.xda-developers.com/galaxy-s4