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Product Overview
Samsung ECG App v1.2 is an over-the-counter medical app in Samsung Health Monitor that records a single-lead style ECG from a compatible Galaxy Watch and saves the report to your Galaxy phone. This guide is based strictly on Samsung’s official documentation for Samsung ECG App v1.2. It helps adults 22+ capture an ECG, review rhythm labels, and respond appropriately.
In simple terms, the app creates a one-channel electrocardiogram similar to a Lead I ECG, then classifies eligible recordings as atrial fibrillation (AFib) or sinus rhythm to support rhythm identification. It also includes an Irregular Heart Rhythm Notification feature that checks pulse-rate patterns in the background when conditions allow, and may suggest taking an ECG when an irregular rhythm looks consistent with AFib.
ECG apps sit between wellness tracking and clinical testing: they can help you document episodes and share a record with a clinician, but they do not replace diagnosis or treatment. If you are trying to understand intermittent symptoms or you have received repeated alerts, Samsung ECG App v1.2 is meant to help you capture an on-demand ECG and keep the report in one place.
Best suited for:
- Adults 22+ who want an on-demand ECG recording from a compatible Galaxy Watch and Galaxy phone.
- Users who want notifications that may prompt an ECG when an irregular rhythm suggests possible AFib.
- People who need a saved ECG report in the phone app for later reference or discussion with a healthcare professional.
Consider alternatives if:
- You are under 22 years old.
- You have an implanted pacemaker, implanted defibrillator, or another implanted electronic device.
- You have a known arrhythmia other than AFib, since the app is not intended for other arrhythmias.
One easy-to-miss detail: even with irregular rhythm notifications enabled, the watch is not continuously monitoring for AFib. A lack of alerts is not proof that no condition is present, so treat notifications as an opportunistic prompt, not a guarantee.
Safety Warnings
Samsung ECG App v1.2 is intended to support rhythm identification, not to diagnose heart attacks or replace care from a qualified healthcare professional. If you feel unwell or have urgent symptoms, treat that as a medical issue first and use the app only when it is safe to do so. Follow the warnings below to avoid unsafe use and inaccurate results.
Warning: Do not use the ECG feature if you are experiencing shortness of breath, chest pain or pressure, fainting, or what you believe may be a heart attack. Contact emergency services immediately.
- Do not use if you are younger than 22 years old.
- Do not use if you have an implanted pacemaker, implanted cardiac defibrillator, or other implanted electronic device (interference risk).
- Do not use if you have a known arrhythmia other than atrial fibrillation (intended-use limitation).
- Do not change medication or dosage based on app output (treatment risk). Discuss results with a qualified healthcare professional.
- Do not take ECG measurements during physical activity (motion can degrade signal quality and lead to poor or misleading results).
- Avoid taking ECG measurements near strong electromagnetic fields, such as MRI or X-ray equipment, anti-theft systems, or metal detectors (interference risk).
- Do not take ECG measurements during medical procedures such as surgery or external defibrillation (safety and interference risk).
- Only measure when the watch is within operating conditions: temperature 54 F to 104 F (12 C to 40 C) and humidity 30% to 90% relative humidity (accuracy risk outside range).
- For Bluetooth pairing security, pair the Galaxy phone and watch in a private setting rather than a public space (privacy risk).
Installation Instructions
To install and prepare Samsung ECG App v1.2, update your Galaxy Watch, install Samsung Health Monitor on your phone, and complete setup prompts so the watch and phone can record and sync ECG reports. These steps matter because the ECG recording runs on the watch, while reports are stored and reviewed in the phone app. A missed update or pairing issue can prevent activation.
- Update your Galaxy Watch to the latest software version so it meets the required watch OS level for the ECG feature you plan to use.
- Install the Samsung Health Monitor app on your Galaxy phone from the Galaxy Store so the phone can store ECG reports and manage settings.
- Open Samsung Health Monitor on the phone and follow the on-screen setup prompts to activate the ECG feature for your region and device.
- After setup, open Samsung Health Monitor on the watch and confirm ECG is available so you can start an on-demand recording.
- To enable Irregular Heart Rhythm Notification, first record at least one ECG that is not poor quality, then use the ECG app launcher screen to start the feature and follow on-screen instructions.
Tip: Before your first recording, confirm the watch is paired over Bluetooth and that you have an active cellular connection during phone-side activation, since activation and syncing depend on connectivity.
How to Use Samsung ECG App v1.2
To use Samsung ECG App v1.2, open Samsung Health Monitor on your Galaxy Watch, start an ECG, and hold a fingertip on the watch Home key for 30 seconds while staying still. This steady contact helps the sensor capture a clean signal. After the recording, review the classification in the phone app and use it to decide whether to contact a clinician.
Recording an on-demand ECG on a Galaxy Watch
Recording works best when the watch has solid skin contact and you avoid movement, because motion and poor contact are the most common causes of unusable traces. Follow the steps below to produce a classifiable ECG and reduce the chance of a poor recording.
- On the watch, open Samsung Health Monitor and select ECG so the watch enters measurement mode.
- Wear the watch snugly on your wrist so the sensor maintains consistent contact through the entire recording.
- Rest your forearm on a flat surface to reduce motion, then lightly place a fingertip of your opposite hand on the watch Home key for 30 seconds.
- Stay still and avoid talking until the recording completes, since movement can introduce noise and stop the recording.
Note: Pressing the Home key during recording stops the measurement.
Receiving an Irregular Heart Rhythm Notification
When enabled, irregular rhythm notifications rely on periodic checks using the watch’s optical sensor when you are still. If the feature detects a pattern suggestive of AFib, it takes additional readings, and you receive a notification only after a sustained detection window, so alerts may not appear for every episode.
- If the watch detects AFib continuously for about one hour, it can send a notification suggesting you record an ECG.
- If the watch is in bedtime, do not disturb, or theater mode, the alert is delayed until silent mode is turned off.
- After a notification, record an ECG as soon as possible to capture a more accurate rhythm snapshot, then use the result to decide whether to contact your doctor.
Understanding ECG results and what they mean
Samsung ECG App v1.2 can label classifiable recordings as sinus rhythm or AFib, and it can also return inconclusive or poor recording when it cannot classify the trace. Knowing what each label implies helps you choose the next step: repeat the recording, improve contact, or discuss the report with a clinician rather than acting on the app alone.
- Sinus rhythm: A regular rhythm within a typical heart-rate range during the recording. This does not guarantee the absence of other conditions.
- Atrial fibrillation (AFib): An irregular rhythm consistent with AFib during the recording. Contact a doctor for guidance.
- Inconclusive: The trace could not be classified, often due to heart rate being too high or too low, or a rhythm outside sinus rhythm and AFib.
- Poor recording: The app could not analyze the data, commonly due to movement or insufficient skin contact.
Technical Specifications
Samsung ECG App v1.2 requirements mainly come down to compatible Galaxy Watch models, minimum watch OS and phone OS versions, and operating conditions for accurate measurements. These specifications matter because the ECG and notification features depend on specific watch hardware, OS capabilities, and enough local storage to keep monitoring running in the background.
| App version | Supported watch models | Minimum watch OS | Minimum phone OS |
|---|---|---|---|
| ECG v1.1 | Galaxy Watch Active2, Watch3 | Tizen 4.0.0.8 or higher | Android 12 or higher |
| ECG v1.1 | Galaxy Watch4 or higher | Wear OS 3.0 or higher | Android 12 or higher |
| ECG v1.2 (with IHRN) | Galaxy Watch4 or higher | Wear OS 4.0 or higher | Android 12 or higher |
| Requirement | What it affects |
|---|---|
| Temperature 54 F to 104 F (12 C to 40 C) | Measurement reliability (outside range can increase poor recordings) |
| Humidity 30% to 90% RH | Measurement reliability (outside range can affect sensor performance) |
| At least 10 MB available storage on the watch | IHRN monitoring continuity (monitoring pauses until enough space is available) |
| Finger and sensor contact must be clean and unobstructed | Signal quality (cuts, scars, bruises, dirt, tattoos, dryness, cold skin, or excess hair can reduce signal strength) |
Troubleshooting
If Samsung ECG App v1.2 is not activating, not showing on your watch, or producing poor or inconclusive readings, the cause is usually compatibility, connectivity, storage, or signal quality. Use the table below to match your symptom to a likely cause and a fix. If you still cannot get a usable ECG, the watch may not be detecting a strong enough signal.
| Problem | Cause | Solution |
|---|---|---|
| I can’t activate the ECG App in Samsung Health Monitor on my phone | Service may not be approved in your country, or activation lacks a cellular connection | Confirm the ECG feature is approved for your region and activate with an active cellular connection. |
| I can’t find the ECG App on my Galaxy Watch | Watch or phone OS is not compatible, or required software is not updated | Confirm your watch model is supported and your phone runs Android 12+. Install Samsung Health Monitor on the phone and update Galaxy Wearable and watch software to the latest maintenance release. |
| I can’t record my ECG | Poor skin contact, cool or dry skin, tattoos or hair, movement, or pressing the Home key can stop recording | Improve contact and stay still. Check in-app guidance under More options and How to use on the phone app, then try again. If it still fails, the watch may not detect a strong enough signal. |
| I don’t have enough storage on my watch | Less than 10 MB free storage prevents monitoring and ECG recording | Free space by uninstalling watch apps via the Galaxy Wearable app or directly on the watch, and delete unneeded files. |
| I don’t see my ECG results in the phone app | Bluetooth pairing or syncing is incomplete | Verify the watch is paired to the phone over Bluetooth through the Galaxy Wearable app. Then tap Sync in the phone app (upper-right) to refresh results. |
| I’m repeatedly getting a Poor recording result | Signal noise from dirty sensors, low moisture, tattoos, scars, insufficient contact, or movement | Clean the back of the watch, your wrist, and the measuring fingertip. Wear the watch snugly, rest your forearms on a table, and try positioning the watch slightly farther from the wrist bone toward the elbow for better contact. Low peripheral blood flow may also limit signal strength. |
| I’m repeatedly getting an Inconclusive result | Heart rate is too high or too low, rhythm is not sinus rhythm or AFib, or AFib occurs with a high rate | If you feel this is an emergency, contact local emergency services. Otherwise, stay still for 5 to 10 minutes and measure again. If the result repeats, contact your doctor. |
| I keep getting irregular heart rhythm notifications | Notifications are prompting you to confirm rhythm with an ECG | Record an ECG as soon as possible after the alert and follow the ECG result. If you receive a sinus rhythm result but still feel unwell, contact your doctor. |
| My ECG waveform looks upside down | Wrist selection or wrist orientation is set incorrectly, sometimes after an OS update | Check wrist selection in the phone app under More options, Settings, Accessories, and Wrist selection, then update it to match the wrist you wear the watch on. |
Next Steps
After you can record a clean ECG, use the saved report in the phone app as a reference for your own tracking and for conversations with a qualified healthcare professional. If you rely on irregular rhythm notifications, keep at least 10 MB of free watch storage so monitoring does not pause. For the latest regional availability and compatibility, use the Samsung Health Monitor support resources described in the official documentation.
What results can Samsung ECG App v1.2 show?
It can show sinus rhythm, atrial fibrillation (AFib), inconclusive, or poor recording. Each label reflects whether the trace was classifiable and, if so, whether the rhythm looked regular (sinus) or irregular in a way consistent with AFib.
When does the watch send an irregular heart rhythm notification?
When the feature is enabled, the watch periodically checks your rhythm when you are still and may confirm AFib with additional readings. If AFib is detected continuously for about one hour, it can notify you, but alerts may be delayed if the watch is in bedtime, do not disturb, or theater mode.
Why does my ECG waveform look upside down?
An inverted waveform can happen when the wrist selection is set incorrectly, including after a Wear OS update resets orientation settings. Review wrist selection in Samsung Health Monitor settings and set it to match the wrist you actually wear the watch on.