Blackberry 9720 User Manual page 66

User Guide
• To decrease the volume, press the Volume Down key on the right side of your smartphone.
• To mute the volume, press the Mute key on the right side of your smartphone. To turn off mute, press the Mute key
again. If you press the Mute key during a call, your smartphone mutes the call so that you can hear others on the call,
but they can't hear you.
Related information
Mute a call,63
Improve sound quality for media
Amplify the volume using the audio boost
Change the default volume for calls
You can increase or decrease the default volume for calls. The higher you set the volume percentage, the louder the
volume is.
1. From the home screen, press the key.
2.
Press the key > Options > In-call Settings.
3. Change the Default Call Volume field.
4.
Press the key > Save.
Improve sound quality during a call
You can't change sound quality when you are using a Bluetooth enabled headset.
1.
During a call, press the
2. Select a Boost Bass or Boost Treble option.
Improve sound quality for all calls
You can't change sound quality when you are using a Bluetooth enabled headset.
1.
From the home screen, press the
2. Press the key > Options > In-call Settings.
3. Change the Phone Call Audio field or Headset Call Audio field.
4.
Press the key > Save.
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feature,154
key > Enhance Call Audio.
key.
Phone