Read System Volume Setting

Reading the current system audio volume

		MPMusicPlayerController *iPod = [MPMusicPlayerController iPodMusicPlayer];
		float volumeLevel = iPod.volume;
		NSLog(@"Volume: %f", volumeLevel);

You need to import the MediaPlayer framework and use:

#import <MediaPlayer/MediaPlayer.h> 

Other resources

http://stackoverflow.com/questions/7255006/get-system-volume-ios