The ECG (electrocardiogram) feature on the Apple Watch is a vital health tool, capable of detecting irregular heart rhythms like atrial fibrillation. However, after a software update, some users report that the ECG app stops working or fails to provide accurate readings. If you’re facing this issue, here’s how to troubleshoot and restore ECG functionality.
Why Is ECG Not Working on Your Apple Watch?
Before diving into fixes, it’s important to identify potential causes:
Unsupported Model: Only Apple Watch Series 4 and newer models support ECG.
Regional Restrictions: The ECG feature may not be available in your country.
Software Issues: Beta or outdated watchOS/iOS versions can cause compatibility problems.
Poor Fit or Contact: A loose band, sweat, or dirt can interfere with readings.
Medical Limitations: Certain heart conditions may prevent accurate ECG results.
How to Fix ECG Issues on Apple Watch
Ensure Proper Fit and Cleanliness
The ECG sensor requires good skin contact. Adjust your band for a snug (but comfortable) fit and ensure your wrist is clean and dry. Place your arm on a flat surface and keep it still during the test.
Enable ECG in the Health App
If the ECG app is missing, check if it’s enabled in the Health app on your paired iPhone:
- Open Health → Browse → Heart → Electrocardiogram (ECG).
- Tap Set Up and follow the instructions.
Check Software Compatibility
Mismatched or beta software versions can disrupt ECG functionality. Ensure both your iPhone and Apple Watch are running stable, updated versions:
For iPhone: Go to Settings → General → Software Update.
For Apple Watch: Open the Watch app → General → Software Update.
If using beta software, consider switching to stable releases:
iPhone: Settings → General → Software Update → Beta Updates → Off.
Apple Watch: Watch app → General → Software Update → Beta Updates → Off.
Restart Both Devices
Minor software glitches can often be resolved by restarting your Apple Watch and iPhone.
Unpair and Re-Pair Your Apple Watch
If syncing issues persist:
- Open the Watch app → All Watches → Tap the i icon → Unpair Apple Watch.
- After unpairing, set up the watch again.
Conclusion
While ECG malfunctions can be frustrating, these troubleshooting steps should help restore functionality. If the issue persists, contact Apple Support for further assistance. Keeping your devices updated and ensuring proper wear can prevent future problems.
