Answer (1 of 2): If you don’t have anything going on like say a video or audio playing then the ringer volume will be the default volume setting at that time to be adjusted when you just click the buttons. When ever there is something else going on in the foreground then that will be the default
AT&T Cingular Flip IV (U102AA) - Sounds - AT&T
How do mobile phones not get into a sound-feedback loop when on
I dropped my phone and now the external speaker won't work, only
Is Your iPhone Volume Way Too Low? How to Fix It
My phone ringer won't stay on. - Apple Community
How to Turn Off the iPhone Ringer
iPhone not ringing? Here's how to fix it.
Why does my phone ringer's volume go up and down when I press the
Why does my sound volume go down and then back up on my phone, all
How to adjust all four Android volumes simultaneously with the
Why does my phone ringer's volume go up and down when I press the
My iPhone keeps turning the sound down - Apple Community
Volume buttons control media volume instead of ringer volume
How to get the volume button on the screen on an Android