The “another awesome health feature” is Samsung’s Irregular Heart Rhythm Notification (IHRN). It periodically checks pulse data while you are still, looks for a pattern suggestive of atrial fibrillation (AFib), and asks you to record an ECG if that pattern persists. It is a screening aid—not continuous monitoring, a diagnosis, or an emergency warning system.
Samsung announced FDA clearance in 2023, so this is established Samsung Health Monitor functionality rather than a new 2026 rollout. Whether you can use it now depends on your watch, software, Galaxy phone, account and country.
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What IHRN actually does
IHRN analyzes pulse-rate data collected by a compatible Galaxy Watch. Samsung says the watch checks your pulse a few times per day when you are still. If it detects an irregular rhythm suggestive of AFib for approximately one hour, it sends a notification recommending an ECG recording.
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Samsung’s FDA-cleared indication describes the software as an over-the-counter mobile medical application for informational use in adults 22 and older in the United States. The clearance documentation says it is not intended to notify users about every possible AFib episode, and no notification does not prove that AFib or another condition is absent.
See Samsung’s FDA announcement at Samsung Mobile Press and the FDA documentation at FDA 510(k) K230292.
Compatibility: watch, phone, software and country all matter
A watch that looks compatible may still lack IHRN. Samsung Health Monitor availability is controlled by the specific model and software combination, the paired phone, and regulatory approval in your location.
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- Watch: Use a Galaxy Watch model supported by Samsung Health Monitor. The 2023 rollout began with newer Galaxy Watch devices and expanded to earlier supported models running the required One UI 5 Watch software, but support is not a blanket guarantee for every generation.
- Phone: Wear OS Galaxy Watches require pairing with a compatible Galaxy phone running Android 12.0 or later under Samsung’s current US support information. Older Active2 and Watch3 models have separate requirements.
- Apps and firmware: Samsung Health Monitor must be installed and current, and the watch software must be updated.
- Region: IHRN appears only where Samsung Health Monitor has the required authorization. A watch or phone purchased for another market can therefore behave differently from one sold locally.
- Age and medical context: The US FDA indication is for adults 22 and older and informational use.
Check Samsung’s current compatibility guidance before buying or troubleshooting: Samsung Health Monitor, Health Monitor compatibility and ECG support, and Samsung’s troubleshooting page.
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Samsung’s initial June 2023 rollout covered Argentina, Azerbaijan, Costa Rica, the Dominican Republic, Ecuador, Georgia, Guatemala, Hong Kong, Indonesia, Panama, South Korea, the United Arab Emirates and the United States. That was a historical launch list, not a complete worldwide list for 2026; the option’s presence in your Samsung Health Monitor app is the practical current check.
How to turn on Irregular Heart Rhythm Notification
Samsung’s labels can vary by app version and model, but the current setup sequence is:
- Pair the watch with a compatible Galaxy smartphone over Bluetooth.
- Connect it through the Galaxy Wearable app.
- Update the watch software.
- Install or update Samsung Health Monitor from the Galaxy Store.
- Open Samsung Health Monitor on the phone.
- Record an ECG that is not classified as a poor recording.
- In the ECG area, tap Get started and follow the instructions.
- Enable Irregular Heart Rhythm Notification if the option is offered for your device and region.
If the option is missing after updates, verify the phone model, Android version, watch model, Samsung account region and market of purchase. Do not assume that another software update alone will unlock a feature that is not authorized in your country.
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- Stay calm and follow the app’s prompt to record an ECG as soon as practical.
- Sit still, position the watch correctly and complete the approximately 30-second recording.
- Review the result in Samsung Health Monitor. The ECG can synchronize to the paired phone, where Samsung says you can create a PDF report and share it with a healthcare professional.
- Contact a clinician for interpretation and next steps. Do not change medication or dosage based on a watch result.
Seek emergency medical care immediately for chest pain, severe shortness of breath, fainting or other potentially life-threatening symptoms, regardless of whether the watch has sent a notification.
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How to obtain a cleaner ECG
- Sit quietly for about 5–10 minutes beforehand.
- Clean and dry the sensor and your skin.
- Wear the watch snugly, away from the wrist bone, so it lies flat.
- Rest your arm on a flat surface.
- Place a fingertip on the top button without pressing it.
- Do not talk or move during the recording.
A “Poor recording” usually reflects contact, movement or positioning. Try again using these steps and Samsung’s in-app troubleshooting guidance.
Results, limitations and safety warnings
It is not continuous AFib monitoring
The watch checks periodically while you are still, not continuously. Episodes shorter than roughly one hour may not trigger an alert, and Samsung says the feature is not intended to catch every episode.
An alert is not a diagnosis
An irregular rhythm notification is a reason to perform an ECG and seek professional advice—not proof of AFib. An ECG may be classified as AFib, sinus rhythm, inconclusive or poor recording. Samsung notes that an inconclusive result can occur when the heart rate is below 50 bpm or above 150 bpm, or when the rhythm cannot be classified.
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Samsung says the ECG app is not intended to diagnose cardiac conditions or heart attacks, replace conventional diagnosis or treatment, or guide medication changes. It is also not intended for people with a known arrhythmia other than AFib or for use with an implanted pacemaker, implanted cardiac defibrillator or other implanted electronic device. Follow your clinician’s advice about whether the feature is appropriate.
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Troubleshooting common problems
IHRN does not appear
- Confirm that your country supports Samsung Health Monitor and that the watch and phone are paired in the Galaxy Wearable app.
- Install the latest watch firmware and Samsung Health Monitor version.
- Check that a Wear OS watch is paired with a Galaxy phone running Android 12.0 or later, rather than assuming any Android phone is supported.
- Check the exact model and market of both devices. Imported hardware can have different feature authorization.
The ECG says “Poor recording”
Dry or dirty skin, a loose fit, placement over the wrist bone, movement, talking or incorrect finger contact can interfere with the signal. Clean the sensor, reposition the watch, rest your arm and repeat the recording.
The ECG is inconclusive
Repeat it when you are still and within the supported heart-rate range. Persistent or concerning results should be discussed with a healthcare professional rather than interpreted from the watch alone.
No notification arrived
That does not establish that your rhythm is normal. IHRN is opportunistic and intermittent by design, so it can miss episodes. Symptoms should guide urgent care decisions, not the absence of an alert.
Privacy and practical expectations
ECG results are viewed through Samsung Health Monitor on the paired phone and can be exported as a PDF for a clinician. Before enabling health features, review Samsung’s current account, synchronization and privacy settings for your devices. The materials cited here do not establish a universal retention or cloud-storage policy, so those details should be checked in the current Samsung privacy documentation for your account and region.
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Should you buy a Galaxy Watch for IHRN?
Buy based on confirmed compatibility, not the phrase “health tracking” on a product page. A current-generation watch, or a discounted Watch4, Watch5 or Watch6, may support IHRN when Samsung Health Monitor is available for the buyer’s model, phone and region. Samsung’s official watch catalog is at samsung.com/us/watches.
A compatible Galaxy phone is part of the setup; Samsung’s phone catalog is at samsung.com/us/smartphones. A snug replacement band may improve contact, but it cannot guarantee an accurate ECG; Samsung accessories are listed at samsung.com/us/mobile/mobile-accessories. The reviewed Samsung materials present IHRN as a built-in Health Monitor feature rather than a separately priced subscription. Watch prices and medical follow-up costs vary and are not specified here.
The Bottom Line
IHRN is useful as an occasional early-warning screen: it can flag a pattern suggestive of AFib and prompt an ECG. It is not continuous surveillance, cannot rule out disease when silent, and never replaces urgent care or a clinician’s diagnosis.
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