HTC Butterfly - Manual (Page 25)

While in a call, turn HTC Butterfly over to turn
the speakerphone on for hands-free
conversations or for conference calling.
Pick up to lower volume
In a business meeting or restaurant, pick
HTC Butterfly up when a call comes in to
lower the ringtone volume.
Set volume to automatically rise while in your pocket or bag
On a noisy street and can't hear HTC Butterfly ringing in
your bag?
You can set HTC Butterfly to recognize when it's in your
bag or pocket and raise the ringtone volume so that you
can hear it in noisy environments.
25 Your first week with your new phone