F.A.Q. ← Knowledge Base "Analysis Failed" on the Apple Watch No sound or audio recorded My Apple Watch does not sync with my iPhone Pillow does not appear under Privacy -> Motion & Fitness. What can I do? How do I force sync the session from Apple Watch to the iPhone? Sessions on my Apple Watch are not syncing with my iPhone Can I manually sync a sleep session from the Apple Watch to the iPhone? Snooze does not work when device is locked How do I get started with Pillow? After an app update my sleep data are missing from the app. What can I do? How does pillow calculate sleep quality? How do I need to place my device during sleep? Do I need to calibrate my device? Does Pillow work in background? Why do I have to keep it plugged in during the night? Does Pillow work if my device is on silent/Do Not Disturb mode? How does smart wakeup work? What is sleep aid? Does Pillow record every sound that may occur through the night? Why does pillow need access to the microphone? Why does pillow need access to my motion data? Do you store any sleep data outside my phone? How does Runkeeper connectivity work? How does iCloud work? If I am using iCloud sync, does the device need to be always connected to the Internet? I want to switch off iCloud for my device. Can I keep a local copy of my sleep data on the device? Does Pillow record every sound that may occur through the night? Can I export Pillow data? I try to purchase Pillow Premium and get "Purchase Failed". What's going on? I can't get out off the Upgrade/Premium window Does Pillow work with a CPAP machine? I woke up and the daily report shows "no data recorded". What's happening? How do I restore the in-app purchase? I'm using an iTunes library song as an alarm sound and the song does not play on wakeup. What's going on? Can I set my own alarm times for the 3D touch shortcut menu? How can I see my last night's sleep analysis? My Apple Watch is showing that a session is active on the phone, but it is not. What should I do? Can I use the Apple Watch app without the phone being in contact? Will Pillow work under my pillow? Can i turn my phone off while using Pillow? Does Pillow have Apple Watch support? How do I listen to my audio recordings? Does the alarm function work, even if my device is locked? The intro video won't play If I pay for the Premium features, is this a one time payment? Does the app work when the screen locks? I get the message "In app purchases not allowed" when I try to unlock the Premium features My sleep shows as "Awake" for the whole night when using the Watch. Why? Can I use Pillow's premium features with Family sharing? How does Pillow calculate REM sleep? Why do my audio recordings fail to play? When using the Apple Watch, the smart alarm does not work accurately. Why? Pillow asks to enable motion and fitness access, but it is already enabled. What should I do? Will notifications, texts and calls go through while Pillow is active? How to activate sensor recording in iPhone 5/5C After updating, I get a blank screen when starting Pillow on the Apple Watch. What can I do? Analyzing on the Apple Watch gets stuck. What can I do? How does heart rate work in Pillow? Can Pillow track my sleep automatically? I'm trying to restore my premium upgrade, but the app says "Restore failed". Will Pillow on the Apple Watch work with "Theater mode" enabled? Does Airplane mode affect sleep tracking when I use the Apple Watch? What do the indicators (arrows) next to sleep quality mean? Pillow on my Apple Watch is in Chinese. How to change it back to English? My sleep sessions shows only "Awake" time. Why? Problems syncing my data via iCloud Upgrade failed (Unable to purchase the Premium Features) I don't see any heart rate data How can I leave nap mode? I cannot install Pillow on my Apple Watch I purchased the Premium features of Pillow and now Pillow is asking again to unlock the Premium Features Will Pillow work if I turn on Airplane mode on my iPhone or iPad? The alarm goes off after I delete/remove Pillow The alarm does not go off or is completely silent.