volume is Deprecated in iOS 7
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iOS 7: MPMusicPlayerController volume deprecated. How to change device volume now?
56455
Windows 7 lowers applications' volume automatically
85504
AirPods 2nd Gen. with firmware 2A364 dropped volume level in non-iOS Devices
13057
How can I remap the volume buttons for custom use?
100885
How to change the default volume name in the /media path?
55137
Are headphones plugged in? iOS7
59808
Repeat on iOS 8.4 music app?
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How Do I Eject a Volume in Java?
143762
iOS 7 Interface Orientation
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Cross-platform space remaining on volume using python
117199
How can I "delete" the last word, using iOS dictation feature?
65678
Is there an ingame way to change volume?
84387
Terminal command to set audio volume?
68933
How to remove restrictions in latest IOS?
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Merge "free space" with Mac OS Volume
72214
Where is the OS X Volume Change Feedback Sound File located?
80918
Disabling sound output devices (e.g. Internal Speakers) in OS X