Device Guides
Apple iPhone 5s
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iOS is the operating system software installed on your iPhone. To find out which version you have: Tap Settings, Tap General, Tap About, and view the version number.

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How to
Choosing a ringtone for my mobile phone
Want to change the ringtone for your mobile phone? Follow these easy instructions.
Tap Settings.
Tap Sounds.
Tap Ringtone.
Tap the different ringtones to listen to them.
Once you've found a ringtone you like, tap Sounds.
Tap the Home key to return to the home screen.