How to Change Audio Volume on HTC One
Increase or decrease the audio volume of Ringtone, Notifications, Music, Video and Alarm from the Sound setting. To set and change audio volume on ...
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Zooming in or out is possible with the digital zoom feature (maximum 4x) on Google Nexus 4. To Zoom in On Nexus 4 Camera (both Front and Rear) do as follow:
1. Open "Camera" App
2. Tap and hold the screen with 2 finger
3. The zooming feature is now enabled
4. Pinch in or out to Zoom in or out