Insufficient data for sleep detection or Pillow couldn't detect any sleep sessions

This issue indicates that Pillow couldn’t find any data in order to perform sleep analysis. This happens because Pillow doesn’t have permission to access the required Apple Health data or your Apple Watch didn’t capture any data.

Checklist:

1. Make sure you have the latest version of Pillow installed.

Here’s how to check:
1. Open the “App Store” app on your iPhone
2. Tap on the “Updates” tab
3. Check if there is an update available for “Pillow”

2. Does Pillow have permission to access the required Apple Health data?

Pillow uses Apple Health data in order to perform sleep analysis and requires permission to access that data. Sometimes, those permissions get reset, especially after an update of iOS or Pillow.

Here’s how to fix this:
1. Open the Apple Health app on your iPhone (It has a white icon with a red heart)
2. Tap on the “Sources” tab > Go to “Pillow”
3. Turn OFF all the available switches
4. Restart your iPhone and Apple Watch
5. Open the “Apple Health app” on your iPhone > Tap on the “Sources” tab > Select “Pillow” > Turn ON all switches.

3. Do you wear your Apple Watch during sleep?

If you use Pillow with your Apple Watch then Pillow will try to look for Apple Health data registered by the Apple Watch while you were asleep. If you don’t wear your Apple Watch during sleep, then Pillow will NOT be able to perform sleep analysis. There is no need to launch Pillow in order to register data. The Apple Watch will automatically capture all required data as long as you wear it during sleep.

4. Did your Apple Watch register any data?

Sometimes your Apple Watch may fail to register any data or transmit registered data to the iPhone. Here’s how to verify that your Apple Watch registered data:
1. Open the Apple Health on your iPhone
2. Tap on the “Health Data” tab
2. Go to “Vitals” > “Heart Rate” > “Show all data“
3. Select the day that you did wear your Apple Watch during sleep
4. There must be records made by your Apple Watch during the time you were asleep every 3-10 minutes.

If can’t find any data for either “Heart Rate” or “Active Energy” then this is an indication that your Apple Watch has a hardware issue or it is not properly configured. Check the following items to see how you can fix this:

5. Is Bluetooth is turned ON? (Automatic mode only)

This is especially a requirement if you use Pillow in “Automatic“ mode. Automatic mode in Pillow relies on Apple Watch sensor data that get transmitted from the Apple Watch to the iPhone via Bluetooth or Wifi. This process is handled entirely by watchOS automatically. Sometimes it might take 2-10 minutes to transmit all required data from the Apple Watch to the iPhone, especially if the Apple Watch is low in battery.

6. Did you use Airplane mode?

If your devices are in Airplane mode then the Apple Watch will not be able to communicate with the iPhone. You can use Airplane mode while you are sleeping but remember to turn off Airplane mode when you wake up to allow Apple Watch to finish transmitting all registered data to the iPhone (this might take a few minutes).

7. Do you use a Passcode on your Apple Watch?

If you use a passcode for your Apple Watch, your sensor data will not be accessible if you do not enter a passcode when you go to sleep.

Remember to enter your passcode when you wear your Apple Watch before sleep.

8. Is “Wrist detection” enabled?

If you have turned off wrist detection, heart rate data will not be recorded by your Apple Watch which is necessary to perform sleep analysis.

To enable wrist detection:
1. Open the “Watch” app on your iPhone
2. Go to “Passcode”
3. Turn ON “Wrist Detection”

9. Is “Fitness tracking” is turned on?

Here’s how to check:
1. Open the “Settings” app on your iPhone (It has a grey icon with cogs)
2. Go to “Privacy” > “Motion & Fitness”
3. Turn ON “Fitness Tracking”
4. Turn ON the switch next to Pillow 5. Open the “Watch” app on your iPhone (It has a black icon with an Apple Watch) 6. Go to “Privacy” > Turn ON “Heart Rate” and “Fitness Tracking”

10. Did your Apple Watch go into power saving mode?

If your Apple Watch is about to run out of battery, it will go into “Power saving mode” which turns off all sensors so in this case, your Apple Watch will not register any data.

11. Do you wear your Apple Watch loosely or have any tattoos on your wrist?

If you wear your Apple Watch loosely on your wrist the Heart Rate Sensor on your wrist will not be able to record your heart rate properly.If you have a large tattoo on the wrist that you wear your Apple Watch then your heart rate data might not be recorded properly.

12. Ensure that you Start a session that uses the Apple Watch (Manual mode only)

If you don’t use Pillow’s Automatic mode then the easiest way to start a session manually with your Apple Watch is as follows:
1. Open Pillow on your iPhone
2. Set the desired alarm time
3. Leave the app open (do not press the home or side buttons)
4. Open Pillow on your Apple WatchTap on “Start”Select the desired recording mode
5. Tap on “Next” at the bottom of the screen

If you have checked all the items above and the issue persists:

1. Delete and re-install Pillow from the App Store.

Sometimes Pillow is not properly installed and configured by iOS so the only to fix this issues is to re-install Pillow.

2. Unpair and pair your Apple Watch

If none of the above works we suggest that you un-pair and pair your Apple Watch again. We strongly recommend that setup as a new Apple Watch since restoring from a backup might bring back the problematic setup that is causing this issue

3. Contact our support team

If none of the above recommendations work, please contact our support team to help you. To contact support: Open Pillow on your iPhone › Tap on the Settings icon › Select ‘Helpdesk’.

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