Hi guys, welcome to my blog, today we are going to talk about the smartwatch Samsung Galaxy Watch 4 !


The Samsung Galaxy Watch 4 is a historic launch, as the flagship device returns to Google Wear OS. The expectation is high.

As seems customary with the launch of Samsung smartwatches, images, datasheets and errors from retailers have leaked that have spoiled most of the surprises.

As we knew, the Galaxy Watch 4 and Galaxy Watch 4 Classic are ditching Samsung’s Tizen OS for a new version of Google’s Wear OS that Samsung helped build.

The Watch 4 and Watch Classic are the first two watches to show exactly what the two companies have been working on.

  • Slimmer design and new dials
  • Battery life
  • Software
  • Rotating bezel
  • Screen
  • Bixby is useless


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In the box

Galaxy Watch 4 viene spedito in una scatola rettangolare e al suo interno troveremo lo smartwatch, il caricabatterie e un manuale d’uso.


The Galaxy 4 watch is an outstanding smartwatch. The design is repeated on previous generations, with a sleek, streamlined aesthetic, a clean retractable strap, and a large round face compared to the more technical square screens seen on the Apple Watch. The Galaxy 4 watch looks just as cool soaked in sweat on your wrist at the gym as it peeks out from under your shirt cuff at the ambassador’s reception.

The intensity and color hue of the OLED touchscreen adjusts to ambient light levels, becoming slightly brighter in sunlight and dimming as you enter the house. This not only keeps the display legible but also natural looking. By default, the screen conserves battery power by only turning on when you raise your wrist, but setting it to “always on” and the Galaxy 4 watch could almost pass like a regular wristwatch.

The case has two physical buttons, one that sends you to the main screen (the watch face chosen by default) and another that takes you back to the previous menu screen. By tapping and swiping on the screen, you can also control navigation, scroll through widgets, open the system tray, expand notifications and access the settings menu.

Health app

On the health front, the Watch4 series has a new three-in-one BioActive sensor, which can not only read heart rate and perform an ECG, but also assess body composition using a process called bioelectrical impedance analysis (BIA). Commonly used in smart scales, BIA involves sending a low-level electrical current through the body to measure fat and other metrics. You may not feel this happening, but the small electrical current can affect pacemakers and other internal medical devices, so you shouldn’t use the watch to measure your body composition if you have one or are pregnant.

After a 15 second scan, the watch shows skeletal muscle mass, fat mass, body fat percentage, body mass index (BMI, a measure of body size based on weight and height), body water mass and basal metabolic rate (BMR, or the minimum necessary energy needed in an inactive state). It also shows whether the results for each metric are in the low, normal, or high range.

Meanwhile, when you wear it to bed, Watch4 automatically tracks your sleep duration, phases (wake, light, deep and REM) and calories burned. In the Samsung Health app, you can optionally enable nighttime blood oxygen saturation (SpO2) readings. When paired with a compatible smartphone, the watch also allows you to keep an eye on a fairly unusual sleep metric: snoring.

For fitness tracking, the Watch4 series supports 95 different workouts (from walking to running, from archery to flying saucer). It can automatically detect certain types of workouts, including walking, running, using the elliptical, rowing, swimming and dynamic workouts. In testing, the Watch4 Series offered accurate fitness metrics compared to the Apple Watch Series 6, and its automatic training tracking feature worked flawlessly when walking my Bradley dog.


Until last year’s Galaxy Watch 3, all Samsung smartwatches used the same Exynos 9110 dual-core processor that first came with the Galaxy Watch in 2018. Clearly, it was time for an update.

The Galaxy Watch 4 is equipped with Samsung’s new Exynos W920 chipset. This is the first 5nm chipset to be used in a Samsung smartwatch. It offers 1.25x and up to 10x gains in CPU and GPU performance, respectively.

The new model also has 1.5 times the RAM at 1.5GB and double the storage space at 16GB compared to last year’s clock.

It is remarkably fast. I particularly like how smooth the animations are now. There is little or no delay when scrolling between different screens or switching between apps. I have a feeling that with more software optimization we can see a further improvement in performance. This will likely be done through firmware updates across the board.

I was excited to try out the new features Samsung has added to improve the integration of its smartwatches with the broader Galaxy ecosystem. With Auto Switch, your compatible Galaxy Buds earbuds can now switch between phone and watch. The new Buds Controller also lets you manage touch controls, enable ANC, and check battery status right from your wrist.

When you install apps on your phone that have a version compatible with your watch, they will be automatically downloaded to your Galaxy Watch 4. All important settings such as no-disturbing hours, blocked callers, time zones, etc. they are automatically synchronized between the phone and the watch.

All of these features work as advertised. It’s great to see this advanced level of integration between the watch and other devices in the ecosystem. This is really the key to providing a good user experience and keeping users in that walled garden.

Samsung and Google have done a great job of optimizing the Wear OS for this smartwatch with the Exynos W920. There is an obvious benefit to using Android. Galaxy Watch 4 owners can now access the vast library of Android apps. Google Maps is finally available on Samsung watches and so many other useful apps.

The Galaxy Watch 4 works with Android smartphones from all manufacturers, not just Samsung. However, you can only extract the best possible performance from it when using it with a Galaxy smartphone. Although previous watches supported iOS devices, you won’t be able to use the Galaxy Watch 4 with an iPhone.


When Samsung announced the Galaxy Watch 4 and 4 Classic, it proudly proclaimed “up to 40 hours of battery life,” which seemed to indicate that it solved the age-old problem of Wear OS watches having to be charged daily. The good news is that the Watch 4 and 4 Classic, at least the larger sizes, outlive all the Mobvoi and Fossil smartwatches I’ve used in the last year. The bad news is that that’s not much, and certainly not enough to call the Watch 4 a two-day device.

Using the watch normally, with the always-on display disabled but lift and tap to wake enabled, monitoring a workout and checking notifications regularly, the watch lasted a day and a half with no issues. Enabling the always-on-display didn’t affect battery life much, but enough to worry me about the next step, which is sleep tracking.

The battery wouldn’t be a problem at all, however, if the Watch 4 charged faster. It takes nearly two hours to charge the item from dead to full, which means that if you wear it overnight and charge it while getting ready for work or school, you’ll only carry it up to around 25%, making it necessary to purchase another charger for the office or, once at home, putting it back on one to recharge it. Samsung really needs to improve in this area for next time.

Wear OS

The Samsung Galaxy Watch 4 is, of course, the first smartwatch to run on Google and the Wear OS 3 platform jointly developed by Samsung.

To be fair, Google has been more than silent about how Wear OS within it will seek out smartwatch makers looking to adopt the new platform. It’s like Google announced Android for smartphones, but the first phone to come out of the gate was a Galaxy S device – you’re probably wondering which part of that software is from Google and which part is from Samsung.

Part of this is good because Google gives smartwatch makers the opportunity to customize Wear OS 3 to their liking. But that also means we’ll see very different software experiences depending on the smartwatch manufacturer. In the case of the Galaxy Watch 4, Samsung took that idea and followed it.

Wear OS 3 with Samsung’s One UI Watch overlay is injected with Samsung apps, services and customizations. Google Fit is no longer the default fitness app; is Samsung Health. Samsung Pay, not Google Pay, is the contactless payment system provided by default. However, you can download Google Pay from the Play Store. Partnerships with Samsung’s apps have also made their way to the new platform – Microsoft Outlook is available on the Galaxy Watch 4, just like on Samsung phones.

Final Thoughts

The Galaxy Watch 4 might be entry-level with the price, but it offers the full experience of a Wear OS smartwatch. The redesigned interface is more intuitive, supports Google services, and offers a range of third-party apps. Plus, with a new sensor you can be even more partner on your fitness journey.



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