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Galaxy Watch 4 vs Galaxy Watch 3: All rise for the new champion


Last updated: August 12th, 2021 at 16:14 UTC+02:00

The Galaxy Watch 3 brought back something that Samsung smartwatch fans had been missing for a couple of years: the physical rotating bezel. It was otherwise quite similar to the Galaxy Watch Active 2 with almost the same specs and features. The device did come with some new health-related features such as fall detection and blood oxygen saturation measurement.

With the Galaxy Watch 4, Samsung has made some of the biggest improvements to its smartwatches in years. The Galaxy Watch 4 is also a fundamentally different watch in that it runs Android, not Tizen.

Galaxy Watch 4 vs Galaxy Watch 3

Samsung is offering its new smartwatch in two models – the Galaxy Watch 4 and Galaxy Watch 4 Classic. The specs and features are exactly the same. The only difference is the physical rotating bezel that’s only present on the Classic.

The Galaxy Watch 4 Classic is available in 42mm and 46mm sizes with a 1.19-inch and 1.36-inch display respectively, negligibly smaller than the 1.2-inch and 1.4-inch displays on the 41mm and 45mm Galaxy Watch 3. Both new models are slimmer than the Galaxy Watch 3, though.

An interesting point to note in this Galaxy Watch 4 vs Galaxy Watch 3 comparison is that the new models have much higher resolution displays. They also come with the first 5nm processor on a Galaxy Watch, the Exynos W920.

The CPU is 1.25x faster and boasts up to 10x smoother graphics performance. The new smartwatches also have 1.5x the amount of RAM, 1.5GB compared to 1GB on the Galaxy Watch 3. They also boast double the storage at 16GB compared to 8GB on the outgoing model.

Samsung’s new 3-in-1 BioActive Sensor allows for enhanced health and fitness features that were not present in earlier models. This includes detailed body composition analysis, enhanced fitness tracking, advanced sleep management with snoring detection and continuous blood oxygen tracking. This is in addition to all of the features found on the Galaxy Watch 3 such as ECG.

Since the Galaxy Watch 4 runs on the new Wear OS platform co-developed with Google, it’s also capable of running Android apps. This gives it a major advantage over the Galaxy Watch 3 which runs on Tizen and is therefore on the outside of Google’s app ecosystem. The Galaxy Watch 4 is clearly the new champion among all of Samsung’s watches.

Check out the full Galaxy Watch 4 vs Galaxy Watch 3 specs comparison below to get all of the details. We’ll have a detailed review of the Galaxy Watch 4 up soon, so do stay tuned for that.

Interested in Samsung’s new Galaxy devices? Don’t forget to support SamMobile by visiting this link and purchasing it directly from Samsung!

General Information

  • Model Name

    Galaxy Watch 4 (40mm)

    Galaxy Watch 4 Classic (42mm)

    Galaxy Watch 3 (41mm)

  • Model type




  • Colors

    Silver (Silver)Black (Black)Pink Gold (Pink Gold)

    Silver (Silver)Black (Black)

    Silver (Silver)Bronze (Bronze)

  • Announced

    2021, August

    2021, August

    2020, July

  • Released

    2021, August

    2021, August

    2020, August

Physical specifications

  • Dimensions

    Watch: 40.4 x 39.3 x 9.8 mm

    Watch: 41.5 x 41.5 x 11.2 mm

    Watch: 42.5 x 41.0 x 11.3 mm

  • Weights




  • IP rating

    5ATM + IP68 / MIL-STD-810G

    5ATM + IP68 / MIL-STD-810G

    5ATM + IP68 / MIL-STD-810G

Operating system

  • Operating system

    Wear OS

    Wear OS

    Tizen Based Wearable OS 5.5

  • One UI version

    Watch 3.0

    Watch 3.0


  • Networks




  • eSIM support





  • Kind

    Main Display

  • Technology

    Circular Super AMOLED

  • Size

    1.2 inch / 30.2 mm

  • Resolution

    / 360x360 pixels

Watch Galaxy Watch 3Galaxy Watch 4Galaxy Watch 4 ClassicUnpacked 2021
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