HTC One M9 User Manual page 53

Pick up to lower volume
Increase ring volume automatically while phone is in your pocket or bag
In a business meeting or restaurant, pick
HTC One M9 up when a call comes in to
lower the ring volume automatically.
You can turn this feature on or off. Go to
Settings, tap Sound & notification, and
then select or clear Quiet ring on pickup.
Pocket mode makes HTC One M9 recognize when your
phone is in your bag or pocket and raise the ring volume
so that you can hear it in noisy environments.
You can turn this feature on or off. Go to Settings, tap
Sound & notification, and then select or clear Pocket
mode.
Your first week with your new phone 53