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If your Withings Sleep Analyzer has not detected sleep, first allow up to two hours after you get out of bed for the data to appear in the app. Then check that the device has power, is installed and assigned to the right user, can connect to Wi-Fi, and is positioned correctly. Checking the Withings web dashboard helps distinguish a recording problem from an app display or sync problem.
1. Wait for the sleep record to upload
Withings says sleep data can take up to two hours after you get out of bed to reach the Withings App. If you have just woken up, wait before treating a missing record as a detection failure. Withings’ no-sleep-data troubleshooting guide also says a nap must include at least 10 minutes of sleep to be recorded.
2. Check power, installation, and user assignment
Confirm the Analyzer is plugged in
Make sure the Sleep Analyzer is connected to power. If your router is switched off overnight, the Analyzer still needs to remain plugged in to record sleep. Withings’ router FAQ explains that the router can be off while you sleep, but must be turned back on within one hour of waking for the record to synchronize.
Verify that the device is installed for the right person
In the Withings App, open Devices and check that Sleep Analyzer is listed and assigned to the person who used the bed. If it is missing, install it through the app. If you are unsure whether setup completed, follow Withings’ installation steps.
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- EXPLORE THE DEPTHS OF YOUR SLEEP PATTERN - Sleep is the ultra-powerful sleep monitor that allows you to detect snoring, analyze your sleep, proactively monitor your heart rate and much more.
- WORLD PREMIERE - Sleep is the world's first under-mattress sleep sensor, with revolutionary features.
- LEADS TO MORE RESTFUL SLEEP - By analyzing the phases, depth and interruptions of your sleep, you can learn more about your nights and receive advice on how to improve your sleep.
- SNORING DETECTION - Sleep can automatically detect any snoring episodes, which can lead to sleep disturbances.
- ANALYZE YOUR CARDIOVASCULAR HEALTH - Every time your heart beats, it propels a mechanical wave through your body, systematically measured with great precision by the pneumatic sensor.
3. Check whether the problem is recording or app display
Confirm that your Wi-Fi is working, then sign in to the Withings web dashboard and look for the missing sleep record. If the record appears on the dashboard but not in the app, Withings recommends signing out of the app and signing back in. If it still does not appear, uninstall and reinstall the app. If the record is absent from the dashboard too, continue with the device and placement checks below.
4. Position the sensor correctly
The sensor should lie horizontally, fully beneath the mattress, at chest level. If only one person sleeps in a double bed, place it in the center. With a slatted bed frame, a flat, sturdy piece of material such as cardboard between the frame and sensor may help provide a suitable surface. See Withings’ device installation guidance for setup details.
Rank #2
- 【Non-Wearable Sleep Tracking for Better Rest】SOMNDEEP sleep monitor device uses 60GHz millimeter-wave radar to help track sleep routines contactlessly and quietly. With no skin contact and no tight wearables, it offers a gentle, comfortable option for adults, seniors, users with sensitive skin, a wide range of body types, and anyone who wants to understand sleep habits without disrupting natural rest.
- 【Plug In Once, Track Every Night】 Unlike wearable sleep trackers that require charging, wearing, or bedtime pairing, SOMNDEEP contactless sleep tracker is designed for simple plug-in use and automatic nightly tracking. It helps reduce missed data caused by forgotten wearables, low battery, or uncomfortable devices, giving you a more effortless way to follow your sleep routine.
- 【Complete Sleep & Wellness Insights】 Review sleep duration, body movement, restlessness, breathing pattern trends, heart rate, and sleep stage insights such as deep, light, and REM sleep. Compare daily reports and long-term trends to better understand your sleep patterns, adjust your daily routine, build better sleep habits, and support a healthier lifestyle over time.
- 【No Camera Radar Sensing for Privacy】 SOMNDEEP sleep tracker device uses radar-based sensing instead of a bedroom camera, so it does not record images or video. The private, contactless design helps capture sleep-related movement and routine trends while keeping your bedroom experience discreet, quiet, and comfortable.
- 【Easy App Reports & Clear Sleep Trends】 Sleep reports are automatically uploaded to the app via stable 2.4GHz Wi-Fi and shown in simple, easy-to-read charts. View daily sleep data, compare long-term trends, and understand changes in your sleep quality without complicated setup, making it easy for seniors and users who are not very tech-savvy.
Withings lists spring, latex, foam, and memory-foam mattresses as compatible. Its guidance says the device has been tested with mattresses 4 to 15 inches (10 to 40 cm) thick. Waterbeds have not been tested and are not recommended. Do not increase sensor sensitivity unless Withings Support specifically instructs you to do so.
5. If setup or Bluetooth discovery is failing
If the Analyzer was never installed or cannot be found during setup, try the relevant steps in Withings’ installation guide:
Rank #3
- 【Non-Wearable, 100% Comfortable】Monitor your sleep with a smart sleep monitor—no wearables or cameras required. Powered by safe millimeter-wave radar technology, it’s perfect for anyone who prefers a comfortable, non-wearable experience. Enjoy private, comfortable monitoring with no physical contact and no visual recording.
- 【Complete Sleep & Wellness Tracking】Track your heart rate, breathing patterns and body movements in real time with this bedside sleep monitor. Accurately measure the percentage of deep, light, and REM sleep. Compare daily data and monitor long-term trends to see how your sleep quality changes. Stay updated on your sleep patterns for a better understanding of your overall wellness.
- 【See How Daily Activities Impact Your Sleep Quality】Our non-contact sleep tracker lets you observe how daily activities may affect your sleep cycles. Use daily in-app notes to log daily routines for long-term trend tracking of your sleep patterns. This data is for personal reference only.
- 【Gentle Reminders for Better Daily Routine】Set routine and supplement reminders or record personalized voice messages with your smart sleep monitor. Ideal for caregivers, families, or anyone who needs a little extra help staying on top of important tasks.
- 【Clear, Actionable Reports】View easy-to-understand reports about your sleep quality with the sleep monitor. Track long-term trends, better understand your daily habits, and receive helpful lifestyle suggestions to support better sleep quality and a more consistent routine. (Not for medical use.)
- Toggle Bluetooth off and on in your phone’s settings.
- Unplug the Sleep Analyzer, then reconnect it to reboot the device.
- If setup still fails, reinstall the Withings App and try again.
- For Wi-Fi setup errors, check that you entered the password correctly and that your router allows new devices to connect. Sleep Analyzer setup does not support 5 GHz Wi-Fi.
- Use a factory reset only as a later troubleshooting step for persistent Bluetooth discovery problems, following Withings’ instructions.
6. Contact Withings if sleep data is still missing
If the record is still missing after these checks, contact Withings Customer Service for device-specific troubleshooting. Replacement hardware is not a routine first fix; consider it only if Support or a diagnosis indicates a hardware problem.
Quick Recap
Best Value
- NO WATCH, NO RING, NO CAMERA: OZI Sleep slides under your sheet to track overnight sleep patterns without a watch, ring, wristband or camera in the room. Just sleep normally and let OZI do the tracking
- TRACK THE SLEEP DATA THAT EXPLAINS YOUR NIGHT: View sleep stages, heart rate, breathing rate, movement, awake moments, sleep duration, time to fall asleep and your nightly Sleep Score in the OZI app
- REAL-TIME ALERTS FOR FAMILIES AND CAREGIVERS: Receive notifications for bed exits, unusual movement or changes in heart rate and breathing patterns, helping you stay informed without constant room checks
- EASY SETUP WITH NO MONTHLY SUBSCRIPTION: Place the sensor under the sheet, connect the app and start tracking in minutes. No monthly fees, no cameras and no wearable device to charge
- BUILT FOR ADULTS, KIDS 5+, COUPLES AND HOUSEHOLDS: Use OZI for your own sleep, a child, a partner, an older parent or anyone who wants better sleep visibility without wearing a watch or ring
Rank #4
- 【Real-time body movement change monitoring】Record every tiny movement change, and can monitor the number of times you leave the bed, the length of time you fall asleep, and the number of times you turn over.
- 【Sleep quality monitoring and management】Through various indicators and comprehensive intelligent AI algorithm analysis, it provides sleep state analysis, such as deep sleep, light sleep, and awake state.
- 【Sleep reporting and analysis】The intelligent sleep analysis report can intuitively display sleep parameters and provide effective sleep suggestions.
- 【Heart rate variation analysis】Heart rate variability can be analyzed through heart rate monitoring throughout the night, so as to have a deeper understanding of their physical recovery status and stress index, quantify sleep indicators, and improve physical and mental health.
- 【Sleep report】Sleep quality monitoring and management Through the comprehensive intelligent analysis of various indicators such as breathing, heart rate and body movement, it provides analysis of sleep states such as deep sleep, light sleep, REM and awake state
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