Apple Watch Series 4 Vs 3 Is The Upgrade Really Worth It In Current Year

For many Apple Watch users, the decision to upgrade from an older model often comes down to practicality and longevity. The Apple Watch Series 3 was a breakthrough for affordability and core smartwatch functionality, while the Series 4 marked a major leap in design and health capabilities. But years after their release, with newer models available, does moving from the Series 3 to the Series 4 still make sense today? The answer depends on how you use your device, what features matter most, and whether your current watch still meets your needs.

Design and Display: A Noticeable Leap

The most immediate difference between the Series 3 and Series 4 is the design overhaul introduced in the latter. Apple reimagined the case to be slimmer and more modern, but the standout change is the larger, edge-to-edge display. The Series 4 has a screen that’s approximately 30% larger than the Series 3, thanks to reduced bezels. This isn’t just aesthetic—it improves usability significantly.

With more screen real estate, apps are easier to navigate, notifications are more readable, and typing (even with Scribble) becomes less frustrating. The display resolution also improved, offering crisper text and graphics. For users who rely on glanceable information—fitness stats, messages, or navigation—the Series 4 delivers a noticeably better experience.

Tip: If you wear your watch daily and check it frequently, the larger display of the Series 4 reduces eye strain and improves interaction efficiency.

Performance and Hardware: Speed Matters

Under the hood, the Series 4 introduced the S4 chip—a dual-core processor that doubled performance compared to the S3 in the Series 3. This translates to faster app launches, smoother animations, and quicker responses when using Siri or switching between complications.

In 2024, this speed difference remains relevant. While the Series 3 still runs watchOS, it does so with increasing limitations. As watchOS evolves, older hardware struggles. Users report longer load times, occasional app crashes, and delayed notifications on the Series 3—issues far less common on the Series 4, even under current software versions.

Battery life is comparable between the two models—both offer around 18 hours—but the Series 4 manages background tasks more efficiently, which can reduce unnecessary drain during workouts or sleep tracking.

Health and Safety Features: Where the Series 4 Pulls Ahead

This is where the Series 4 truly distinguishes itself. It was the first Apple Watch to include an electrical heart sensor capable of taking an electrocardiogram (ECG). This feature allows users to detect signs of atrial fibrillation (AFib), a serious heart condition. While not a medical diagnosis tool, it provides valuable data that can prompt earlier doctor visits.

The Series 4 also introduced advanced accelerometer and gyroscope sensors enabling fall detection. If the watch senses a hard fall and you’re unresponsive, it can automatically call emergency services and notify your emergency contacts. For older adults or those with mobility concerns, this feature adds a critical layer of safety.

“Fall detection and ECG have already saved lives. These aren’t gimmicks—they’re meaningful health tools.” — Dr. Lena Patel, Cardiologist and Wearable Tech Researcher

The Series 3 lacks both features entirely. If you value proactive health monitoring or have family members who might benefit from emergency alerts, the Series 4 offers tangible advantages that go beyond convenience.

Detailed Feature Comparison

Feature	Apple Watch Series 3	Apple Watch Series 4
Display Size	38mm / 42mm (smaller screen)	40mm / 44mm (larger, edge-to-edge)
Processor	S3 (slower, single-core)	S4 (dual-core, 2x faster)
ECG App	❌ Not supported	✅ Included
Fall Detection	❌ Not supported	✅ Included
Water Resistance	50m (swim-proof)	50m (swim-proof)
GPS + Cellular	Available (on select models)	Available (faster LTE)
Current watchOS Support	Limited (up to watchOS 9)	Full support (up to watchOS 10)
Battery Life	~18 hours	~18 hours

Real-World Example: When the Upgrade Made a Difference

Consider Mark, a 58-year-old teacher with a history of high blood pressure. He used his Series 3 for step tracking and receiving calls. After upgrading to a used Series 4, he began using the ECG app weekly. One evening, the watch flagged an irregular rhythm. He visited his doctor, where further tests confirmed early-stage AFib. With timely treatment, he avoided a potential stroke.

Meanwhile, his daughter Sarah, a college student, upgraded her aging Series 3 to a Series 4 mainly for the larger screen and faster performance. She noticed apps loaded quicker, workouts synced faster, and reading texts without her glasses became easier. For her, the benefits were about usability—not life-saving features—but still significant in daily life.

This illustrates a key point: the value of upgrading depends on personal priorities. Health-conscious users gain more from the Series 4 than casual users.

Is the Upgrade Worth It Today?

In 2024, neither the Series 3 nor the Series 4 is cutting-edge. Apple has released multiple generations since. However, if you're still using a Series 3, the jump to the Series 4 remains one of the most impactful upgrades in the device’s history.

Consider these factors:

• Software Support: The Series 3 maxes out at watchOS 9. The Series 4 supports watchOS 10, meaning access to newer features like enhanced fitness metrics, better sleep staging, and improved privacy settings.
• Resale and Longevity: Used Series 4 models hold value better and are more likely to receive future software updates than the Series 3.
• Cost: You can find refurbished or second-hand Series 4 models for $80–$130, depending on condition and storage. That’s a modest investment for a device that performs better and lasts longer.

Tip: Before upgrading, back up your Series 3 via iCloud or iTunes. During setup, restore from backup to seamlessly transfer apps, settings, and health data.

Upgrade Checklist: What to Evaluate Before Moving Forward

1. ✅ Is your Series 3 experiencing frequent lag or app crashes?
2. ✅ Do you want ECG or fall detection for yourself or a family member?
3. ✅ Are you unable to install the latest watchOS updates?
4. ✅ Do you struggle to read the smaller screen?
5. ✅ Can you find a Series 4 within budget (new, refurbished, or used)?
6. ✅ Is your Series 3 battery degrading (lasting less than 12 hours)?

If three or more apply, the upgrade is likely justified. If your Series 3 still works smoothly and you don’t need advanced health tools, holding off—or considering a newer model—might be smarter.

Frequently Asked Questions

Can the Apple Watch Series 3 still be used in 2024?

Yes, but with limitations. It runs watchOS 9, which lacks newer features like Cycle Tracking enhancements, expanded Mindfulness tools, and some third-party app support. Basic functions—notifications, workouts, heart rate tracking—still work well.

Does the Series 4 have better GPS accuracy?

Yes. The Series 4 includes an updated GPS module with improved location tracking during outdoor workouts. Runners and cyclists will notice more accurate route mapping and pace calculations.

Will Apple discontinue support for the Series 4 soon?

As of 2024, the Series 4 supports watchOS 10. Apple typically supports watches for 5–6 years. Given its 2018 release, it may lose support in 2025. Still, that gives users another year or two of updates.

Final Thoughts: Making the Right Choice for Your Lifestyle

The Apple Watch Series 4 wasn't just an incremental update—it redefined what a wearable could do. For Series 3 owners, upgrading now isn't about keeping up with the latest trend; it's about gaining access to meaningful health insights, a better user interface, and longer software relevance.

If you rely on your watch for more than timekeeping—if it plays a role in your fitness, safety, or daily productivity—the Series 4 upgrade remains worthwhile in the current year. It bridges the gap between basic functionality and intelligent health monitoring, making it one of the last truly transformative jumps in the Apple Watch lineup before cellular integration and blood oxygen sensing arrived in later models.

Technology should serve you, not frustrate you. If your Series 3 is slowing down or missing features you care about, don’t dismiss the Series 4 as outdated. In the world of wearables, some innovations age better than others—and the Series 4’s combination of design, performance, and health tools still holds up.

🚀 Ready to make the switch? Check certified refurbished listings, compare conditions, and take advantage of warranties. Upgrading could mean better health insights, smoother performance, and a smarter daily companion—worth every penny if it enhances your life.