Both watches offer FDA-cleared ECG functionality and comprehensive heart monitoring.

How ECG Works

ECG (electrocardiogram) measures your heart's electrical activity. Both watches detect atrial fibrillation (AFib), an irregular rhythm that increases stroke risk.

Taking an ECG:

• Apple Watch Series 11: Open ECG app, place finger on Digital Crown, wait 30 seconds
• Galaxy Watch 7: Open Samsung Health, touch side buttons, wait 30 seconds

Results: Normal sinus rhythm, atrial fibrillation, inconclusive, or poor recording.

Apple Watch Series 11 Heart Features

• On-demand ECG readings
• Continuous heart rate monitoring
• Irregular rhythm notifications (background AFib detection)
• High and low heart rate alerts
• VO2 max estimates
• New: Hypertension alerts (blood pressure trends over 30 days)

Galaxy Watch 7 Heart Features

• On-demand ECG readings
• Continuous heart rate monitoring
• Irregular rhythm notifications
• Heart rate alerts
• Blood pressure readings (requires cuff calibration)
• Coming: Vascular load metric

Key Differences

Blood Pressure:

• Apple detects hypertension patterns passively over time
• Samsung provides actual readings but requires regular calibration

Limitations

Both watches cannot detect:

• Heart attacks
• Blood clots
• Strokes
• Other cardiac conditions

A "normal" ECG means no detectable AFib right now. These are screening tools, not comprehensive heart monitors. Regular doctor visits are still necessary.

Bottom line: Both watches have excellent, potentially life-saving heart monitoring. Apple's passive monitoring is more convenient. Samsung's blood pressure readings are more detailed.

Cellular lets your smartwatch work independently without your phone nearby. Here's when it's worth the extra cost.

Cellular Pricing

Apple Watch Series 11:

• GPS: $399 (42mm) / $429 (46mm)
• Cellular: +$100
• Titanium: $699 (cellular included)

Galaxy Watch 7:

• Bluetooth: $299 (40mm) / $329 (44mm)
• LTE: +$50

Ongoing costs: $10-15/month carrier fee ($120-180/year)

When Cellular Makes Sense

Get cellular if you:

• Exercise without your phone (running, cycling, swimming)
• Want emergency SOS available everywhere
• Frequently leave your phone behind
• Need to stay reachable during workouts

When to Skip Cellular

Skip cellular if you:

• Always have your phone with you
• Work out at home or gyms where your phone is nearby
• Intentionally disconnect during exercise
• Don't want the monthly carrier cost

Apple Watch 5G vs Galaxy Watch 4G

The Series 11 introduces 5G cellular (first Apple Watch with 5G). The Galaxy Watch 7 uses 4G LTE. For smartwatch tasks like calls and texts, 4G is sufficient. You won't notice the difference.

Battery Impact

Cellular drains battery faster on both watches. If battery life is already a concern, GPS-only versions last longer per charge.

Bottom line: Most people don't need cellular. If you're unsure, start with GPS-only. You can always upgrade to cellular next time.

Your phone decides which watch you should buy. The Apple Watch doesn't work with Android. The Galaxy Watch 7 doesn't work with iPhones.

If You Use an iPhone

Get the Apple Watch Series 11. There's no real alternative for a full smartwatch experience.

Why Apple Watch wins for iPhone users:

• Best app ecosystem of any smartwatch
• Passive health alerts (hypertension, Sleep Score) work automatically
• Fall detection and crash detection have saved lives
• First Apple Watch with 5G cellular
• Seamless integration with iPhone, iPad, Mac, and AirPods

If You Use Android

Get the Samsung Galaxy Watch 7, especially if you use a Samsung phone.

Why Galaxy Watch 7 wins for Android users:

• $100+ cheaper than comparable Apple Watch
• Body composition tracking (unique feature)
• FDA-cleared sleep apnea detection
• Slightly longer battery life
• Circular design looks like a traditional watch

Note: With non-Samsung Android phones (Pixel, OnePlus), some features are limited but core functionality works well.

Feature Comparison Summary

| Feature | Apple Watch Series 11 | Galaxy Watch 7 | |---------|----------------------|----------------| | App ecosystem | ★★★★★ | ★★★☆☆ | | Health alerts | Passive (background) | Active (manual) | | Body composition | ❌ | ✅ | | Sleep apnea detection | ❌ | ✅ | | Price (starting) | $399 | $299 | | Battery life | 24 hours | ~40 hours |

The Bottom Line

Both are excellent smartwatches. Choose based on your phone ecosystem. Don't overthink it. The "best" smartwatch is the one that works with your phone.