Device Guides
Apple iPhone XR
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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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No ringtone is heard on incoming calls
This troubleshooting guide will take you through a number of possible causes
to help you find a solution to your problem.
Turn off silent mode.
Possible cause 1:
Silent mode is turned on
Solution:
Turn silent mode on or off
Slide the Silent mode key right or left to turn silent mode on or off.