The ECG (Electrocardiogram) feature on the Apple Watch has been a critical tool for many users, helping detect irregular heart rhythms and potentially catching early signs of heart conditions. However, some users are experiencing issues with this feature—ranging from error messages to inaccurate readings. If you’re encountering similar problems, there’s no need to panic. Your watch may not be faulty; instead, a few troubleshooting steps could resolve the issue.
Why Is the ECG Feature Not Working on My Apple Watch?
The most common reason for the ECG feature not working is improper usage. However, if the app doesn’t appear at all, it might not have been set up in the Health app, or the feature could be unavailable in your region. Other possible causes include software or hardware problems.
10 Solutions to Fix Apple Watch ECG Issues
The ECG feature is available on Apple Watch Series 4 and later, except for the Apple Watch SE and Apple Watch models for kids. If your watch is compatible and the ECG feature still isn’t working, try these solutions:
1. Confirm ECG Availability in Your Region
Before diving into other fixes, check if the ECG feature is available in your country. Apple restricts this feature in certain regions due to regulatory issues that limit the use of non-medical devices. If you’re unsure, visit Apple’s watchOS Feature Availability page to verify.
2. Set Up ECG in the Health App
If this is your first time using the ECG feature, it needs to be set up in the Health app. Without this initial setup, the ECG app won’t appear on your Apple Watch. Follow these steps on your iPhone:
- Open the Health app.
- Navigate to the Browse tab and select Heart.
- Scroll down and tap Electrocardiogram (ECG).
- Tap Set Up and follow the on-screen instructions.
3. Clean Your Watch’s Sensors
The ECG feature relies on the watch’s electrical and optical heart rate sensors, as well as the Digital Crown. If these components are dirty or blocked by debris, the feature might malfunction. Clean your Apple Watch with a damp microfiber cloth, paying particular attention to the screen, Digital Crown, and the sensors on the back.
4. Use the ECG Feature Correctly
Improper use of the ECG feature can lead to inconclusive results. Ensure that the back of your Apple Watch is in full contact with your wrist, place your finger on the Digital Crown, and remain still with your hand resting on a flat surface while taking a reading.
5. Restart Your Apple Watch and iPhone
Temporary software glitches can interfere with the ECG feature. Restarting your Apple Watch and iPhone can resolve these issues. Here’s how to do it:
For Apple Watch:
- Press and hold the side button.
- Tap the circular power icon in the top-right corner.
- Swipe the Power Off slider to the right.
- Hold the side button again until the Apple logo appears.
For iPhone:
- Go to Settings > General.
- Scroll to the bottom and tap Shut Down.
- Swipe the Power Off slider.
- Press and hold the Side/Top button to restart.
6. Disable AssistiveTouch
AssistiveTouch, while useful, can interfere with health features like ECG. Disabling it might fix the issue:
- Go to Settings > Accessibility on your Apple Watch.
- Scroll down and select AssistiveTouch.
- Toggle it off.
7. Update to the Latest watchOS Version
Bugs in older versions of watchOS can prevent the ECG feature from working correctly. Updating to the latest version may solve the problem:
With iPhone:
- Open the Watch app on your iPhone.
- Go to the My Watch tab and tap General.
- Select Software Update and download the latest version.
Without iPhone:
- Open Settings on your Apple Watch.
- Tap General > Software Update.
- If an update is available, tap Install.
- Make sure your watch is on the charger and do not interrupt the update process.
8. Unpair and Re-Pair Your Apple Watch
Connection issues between your iPhone and Apple Watch can cause the ECG feature to malfunction. Re-pairing the devices might help:
- Open the Watch app on your iPhone.
- Go to the My Watch tab and tap All Watches.
- Tap the i button next to your watch and select Unpair Apple Watch.
- Follow the on-screen instructions to re-pair the watch.
9. Factory Reset Your Apple Watch
If re-pairing doesn’t work, a factory reset may be necessary:
- Open Settings on your Apple Watch.
- Tap General > Reset.
- Select Erase All Content and Settings.
- Enter your passcode and, if prompted, choose to keep your cellular plan.
Alternatively, you can reset your watch via the Watch app on your iPhone under General > Reset.
10. Contact Apple Support
If none of these steps work, the issue might be hardware-related. Contact Apple Support and schedule a Genius Bar appointment for further assistance. If your device is under warranty or covered by AppleCare+, you might be eligible for a free replacement.
