Why won't my Apple Watch Series 9 connect to my iPhone?

My series 9 Apple Watch will not let me connect to my iPhone 15+ because it says my phone is not running iOS 18.0 or later when my phone is updated at 18.3.2 (according to my settings).




[Re-Titled by Moderator]

iPhone 15 Plus, iOS 18

Posted on Mar 18, 2025 4:16 PM

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Mar 18, 2025 6:48 PM in response to Apples_2003

What version of watchOS are you using?


The first (and simplest) thing to try if something isn’t working right is to restart your Apple Watch and its paired iPhone. If necessary (device not responding), try a forced restart. Both methods can be found here:

How to restart your Apple Watch - Apple Support

Restart your iPhone - Apple Support


If that doesn't help, the next steps would be to unpair and pair your watch again and restore from the backup just created. This should result in no loss of data. It deletes all temp and corrupted files and re-indexes the file system.

Unpair and erase your Apple Watch - Apple Support

Set up your Apple Watch - Apple Support


If you still need help, contact Apple Support.


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Why won't my Apple Watch Series 9 connect to my iPhone?

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