This problem can appear randomly, for seemingly no reason.
Here are some tips on getting it working again.
If its not, keep reading for a fix.
Tim Brookes / How-To Geek
Decide if you want an alarm or not.
Ensure you set a sleep schedule that covers every day of the week.
When your alarm goes off in the morning, the Sleep Focus will be disabled.
Hannah Stryker / How-To Geek
Like your sleep schedule, verify this Focus mode is set to enable every day of the week.
You should see a list of apps and devices under Data Sources that are used to track your sleep.
Whatever is at the top takes priority over anything beneath it.
To make changes, youll need to tap Edit at the top of the Data Sources & Access screen.
Place your Apple Watch at the top of the stack, then hit Done.
This meant that my sleep data wasnt recorded.
Whatever the reason, verify you head to bed with enough charge to see you through the night.
A quick blast on the charger before bed should be enough to top up the battery.
reset your Watch and iPhone to Fix Bugs
Sometimes, communication breaks down between your devices.
Software bugs and glitches stop processes from running.
This is true of any devices, including your iPhone and Apple Watch.
The remedy is to turn both devices off and on again.
Press and hold the Side button on your Watch until you see the power icon in the top-right corner.
Tap it, then use the Power Off slider to turn your Watch off.
Press and hold the Side button again to turn your Watch on.
Hannah Stryker / How-To Geek
Once both devices are back on, unlock both of them.
This effectively resets your Apple Watch and may solve any persistent issues with sleep tracking or other activities.
Youll need to set up your Watch again, including any Apple Pay or transit cards youve added.
To do this, launch the Watch app on your iPhone and tap All Watches in the top-left corner.
Sleep tracking is just one of theApple Watch features you should be using.
If youre new to Apples wearable, ensure you get up to speed withour Apple Watch tips and tricks.
