Sometimes outside noise drowns out my ringtone (set to max volume) so as soon as I realize it's ringing, I see a "Missed Call" icon. Shortly I get the voicemail from Google Voice. I would like to increase the length of time the phone is ringing, but can't seem to find a setting in either Phone or Google Voice that'll allow me to do that. Is there one? I've done some searching, but can't seem to find anything.