ring volume / Volume +

[Eduard Walter]

I find the ring volume a bit too low, and i tried with Volume + app
When i test some music from the phone, it sounds really loud ( nice ) but when i receive a call, same song or ringtone i tried from the phone, isn?t the same, it?s lower the volume.
Is there a way to fix that ? I really want the ringer volume louder.
Thank you