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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesYou can receive CGM readings and alerts on a smartwatch, but the setup and whether your phone must stay nearby depend on the CGM system. For Dexcom G7, start in the phone app at Connections > Direct to Watch; for other systems, follow the manufacturer’s instructions and verify compatibility for your phone, watch, operating system, and region.
Before you start: check compatibility and connection mode
Do not assume that a setup supported by one CGM works for another. Check the manufacturer’s current compatibility information for your exact phone, smartwatch, operating-system versions, and region. Dexcom’s documented Direct to Watch workflow is for compatible Apple Watch setups; Abbott’s Libre smartwatch app also has device and OS limits.
The key difference is where the watch gets its data:
- Direct sensor-to-watch: In Dexcom G7 Direct to Watch mode, a compatible watch receives CGM information from the sensor. The phone does not need to remain nearby for readings while the direct connection is working. A compatible phone is still needed to pair a new G7 sensor.
- Phone-relayed smartwatch mode: The watch copies information from the phone, so the phone must remain within range. Dexcom notes that the watch may show no reading when the phone is too far away; waking the watch can refresh its current data.
Dexcom’s guide says Share is not available on the smartwatch. Its Direct to Watch FAQ specifies Wi-Fi for Share/Follow use with a compatible Apple Watch. Check the relevant Dexcom instructions for the configuration you use.
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- HSA/FSA eligible. No prescription needed.
- 24/7 GLUCOSE TRACKING. See your glucose response to food, exercise, sleep, and other lifestyle factors via the Lingo app.
- OPTIMIZE YOUR NUTRITION. Discover which foods work for you and those that don't. The Lingo app shows you how specific meals and other factors impact your glucose, so you can learn from your insights and build healthier habits
- NAVIGATE PREDIABETES WITH A NEW VIEW OF YOU. More time in healthy glucose range is linked to lower diabetes risk. Three out of four users with prediabetes say Lingo was effective in helping to achieve their health goals¹.
- HEALTHY GLUCOSE SUPPORTS HEART HEALTH. What you eat matters to your glucose and your heart. Keeping your glucose in a healthy range (70–140 mg/dL) more often can help protect your heart from heart disease²⁻⁴.
Set up alerts on a Dexcom G7 and compatible Apple Watch
First complete the G7 phone-app and sensor setup, including sensor application, pairing, warmup, and alert configuration. Dexcom’s G7 app setup guide describes that initial process. Then set up the watch connection:
- Start Direct to Watch in the phone app. Open the Dexcom G7 app and go to Connections > Direct to Watch, then follow the on-screen prompts. Dexcom gives this as the starting point in its Direct to Watch setup instructions.
- Install the watch app if it is missing. On the iPhone, open the Watch app, tap My Watch, find Dexcom G7 under available apps, and install it.
- Allow alerts through iPhone settings. Keep Mirror iPhone Alerts enabled for the G7 watch app and allow Dexcom notifications during Focus. The exact setting labels can vary with software versions.
- Sync changed CGM settings to the watch. After changing settings in the phone app, keep the phone nearby, then open and display the G7 app on the watch so the settings can copy over.
- Pair each new sensor when prompted. When you start a new sensor, follow the phone app’s prompt to pair it with the watch. Dexcom says one sensor can be paired with only one smartwatch at a time.
- Check that alerts arrive where you expect. Dexcom warns that smartwatch use can change where alerts arrive. Allow notifications on both phone and watch if you want both devices to alert, and verify delivery using the manufacturer’s instructions.
What the phone icon means on the Dexcom watch display
If an orange phone icon appears beside the reading, Dexcom says Direct to Watch is temporarily not operating and the watch is copying data from the phone instead. Keep the phone nearby until the direct connection is working again. In this fallback mode, the phone’s proximity matters for current readings.
Rank #2
- The information below is per-pack only
- HSA/FSA eligible. No prescription needed.
- 24/7 GLUCOSE TRACKING. See your glucose response to food, exercise, sleep, and other lifestyle factors via the Lingo app.
- OPTIMIZE YOUR NUTRITION. Discover which foods work for you and those that don't. The Lingo app shows you how specific meals and other factors impact your glucose, so you can learn from your insights and build healthier habits
- NAVIGATE PREDIABETES WITH A NEW VIEW OF YOU. More time in healthy glucose range is linked to lower diabetes risk. Three out of four users with prediabetes say Lingo was effective in helping to achieve their health goals¹.
What to expect from the Abbott Libre smartwatch app
Abbott says its Libre smartwatch app can show readings, trend graphs, and glucose alarm notifications on supported devices. It mirrors notifications from the Libre phone app; the smartphone must be within range of both the sensor and the watch, and the appropriate phone settings must be enabled. Check Abbott’s FreeStyle Libre support FAQs for current device and operating-system compatibility.
Abbott states that its smartwatch app should not be used to make treatment decisions. Follow the instructions in the smartphone Libre app.
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- 【Advanced Health Fitness Tracker】-This fitness tracker offers 24/7 heart rate and blood pressure monitoring to help you stay proactive about your health goals. It also supports on-demand blood oxygen checks, so you can quickly see your O₂ level whenever you need it. Detailed sleep tracking (deep sleep, light sleep and wake-ups) and all-day activity tracking give you a clearer picture of your overall health trends. (Inspire a healthy life, not for medical use
- 【All-Day Activity & Fitness Tracking】-The MorePro fitness tracker for women and men offers 120+ sport modes including running, walking and more, so you can track the workouts you actually do. With a built-in pedometer step counter, this smart watch records steps, distance, calories burned, heart rate and training time in real time, giving you clear references for exercise intensity. Whether you’re at the gym, on a run or playing ball with friends, every workout becomes safer, more efficient and easier to enjoy
- 【Women’s Health & Cycle Tracking】-Designed as a women’s health tracker, the smart watches for women offers intuitive menstrual cycle tracking right on your wrist. Use the built-in period tracker to log your menstrual period, safe days, ovulation window and ovulation day, while the app supports period mode, trying-to-conceive mode and pregnancy mode to match different life stages. Whether you’re at work, in class or relaxing at home, gentle women’s health reminders help you prepare in advance with the right clothes and pads, so every month feels more predictable and in control
- 【Everyday Smart Lifestyle Companion】-Stay connected without constantly checking your phone. This smart watch fitness tracker delivers real-time call, SMS and app message notifications on your wrist, so you can see who’s contacting you while you’re in a meeting, commuting or working out. The IP68 waterproof design easily handles sweat, rain and hand-washing. With over 200 watch faces and simple DIY custom faces using your own photos, you can quickly match your watch to business, workout or casual looks
- 【Practical Daily Smart Tools】-From sedentary reminders and drink water reminders to on-wrist weather forecasts, this smart watch helps you build healthier routines at work or while studying. Use music control and camera control while your phone stays in your bag, and rely on the stopwatch, timer, alarm clock and find my phone features to keep workouts, cooking and busy mornings on track
Verify software and alert delivery
Keep the CGM app updated and pay attention to current manufacturer and regulator notices. In a correction notice dated July 24, 2025, the U.S. Food and Drug Administration addressed Dexcom G7 Android, iOS, and watchOS versions 2.8.0 or earlier, and Dexcom ONE+ Android/iOS versions 1.4.0 or earlier. The FDA said a software error could omit a “Sensor Failed” alert after transmitter hardware or firmware failure, stop glucose reporting, and leave a user unaware that data was missing. The notice said affected versions would no longer be usable after August 20, 2025, and advised users to update. See the FDA correction notice for details.
A notification appearing on a watch does not prove that alerts are reaching every device you intend to use. Confirm the watch and phone settings, check that readings are current, and test alert routing as directed by the CGM manufacturer. A generic smartwatch notification is not a substitute for the CGM app, receiver, or the manufacturer’s care instructions.
Quick Recap
Rank #4
- Real-Time CGM Display – Projects continuous glucose monitor data directly onto your ceiling or wall so you can see blood glucose levels and trend arrows instantly.
- Compatible with Leading CGMs – Works seamlessly with Dexcom, Libre, and all Nightscout compatible sensors and platforms, so you get accurate glucose tracking you trust.
- Glucose Alarm & Alerts – Set your own custom range low or high thresholds so you have peace of mind that this device will catch and alert you when you're out of range - no matter if it is day or night.
- Multi-User Monitoring Capability – Supports glucose tracking for up to three users, perfect for families and parents monitoring both child and adult glucose levels.
- Sleep-Friendly Low-Light Display – With a purpose built projector for nighttime use, the display minimizes glare, projects in a sleep-friendly soft red glow, and avoids sleep interruption from bright screens, making it ideal for night time glucose monitoring.
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