Device Guides
Apple iPhone 11 Pro Max
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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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Another Bluetooth device can't connect to my mobile phone
This troubleshooting guide will take you through a number of possible causes
to help you find a solution to your problem.
Turn on Bluetooth.
Possible cause 1:
Bluetooth is turned off on your mobile phone
Solution:
Find "Bluetooth"
Tap Settings.
Tap Bluetooth.
Turn Bluetooth on or off
Tap the indicator next to "Bluetooth" to turn the function on or off.
Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.