Compare Apple Watch Series 6 vs Samsung Galaxy Watch 4

Apple Watch 6 Vs Galaxy Watch 4

This is a detailed comparison of the technical specifications between the Apple Watch Series 6 vs Samsung Galaxy Watch 4.

The main differences between the two watches are summarised in the following table:

Apple Watch Series 6Samsung Galaxy Watch 4
10.7mm thick12.7mm thick
No IP RatingIP68 Rating
32GB16GB
18 hours per charge (~24hrs actual)40 hours per charge (~24hrs actual)
No BIA SensorBIA Sensor
No Hall SensorHall Sensor

Thickness Issue

We were irritated when Samsung listed the watch thickness as “excluding sensors”, which do not make any sense. What matters is the entire thickness of the watch including sensors. When a manufacturer tries to “hide” their specifications, it usually means that the numbers are not pretty. Thanks to PCMag, the thickness is approximately half an inch or 12.7mm.

We have used Samsung Galaxy Active Watch 2 with 13.5mm thickness measured by vernier callipers, and it does not feel thick. The reason could be due to its lightweight and rounded corners. So even though it is thicker than Apple Watch 6, the thickness may not be a significant factor for some users, especially guys.

IP Rating

We feel that an official IP Rating is essential for any mobile device, especially for a smartwatch which also doubles as a modern-day sports watch.

For the Samsung watch, IP68 means it is tested to be dust-tight and can submerge long term underwater for a specified duration. According to Samsung,

This means they are water-resistant to up to 50 metres in depth for 10 minutes. They are now suitable for low-velocity and shallow-water activities, including swimming. You can enjoy more freedom to explore, stay connected, and capture the adventure.

However, there is quite an extensive list of “Do Nots”:

●     Do not keep the device in water: 
–     for more than one hour;
–     deeper than 10cm for more than 30 minutes; or
–     deeper than 1.5 metres for more than 10 minutes.

●     Do not expose the device to water moving with force, such as water running from a tap, hose or shower.

The list shows that the Samsung Watch 4 is not a rugged, military-grade smartwatch, which covers an even more extensive list of qualification tests.

Storage Size

Both watches should increase the storage space up to at least 64 GB. Apple’s 32GB is acceptable, but Samsung needs to be more generous than just 16GB. My antique Apple iPod, bought almost ten years ago, already has 16GB.

Battery Life

According to PCMag, Apple Watch 6’s battery life outperformed their specified 18 hours. They clocked 25.5 hours in their test.

Samsung Watch 4 underperformed as it only achieved about 24 hours instead of the 40 hours claimed by Samsung. As such, Apple Watch Series 6 vs Samsung Galaxy Watch 4 battery life can be considered quite close to each other. The actual battery life for individuals will also vary depending on their usage.

BIA Sensor and Hall Sensor

BIA stands for Bioelectrical Impedance Analysis Sensor, commonly used to measure body composition by passing small electrical currents in your body. Such a sensor is commonly used in measuring muscle, bone and visceral fats in a body composition scale. Generally, the scale readings are not highly accurate, but they can provide a form of estimation. You can read more about the accuracy in our discussion about visceral fat measurement using body composition scale.

Hall sensors are used for proximity sensing, positioning, speed detection, and current sensing applications. While Samsung stated that this sensor is included on the Galaxy Watch 4, Apple’s tech specs did not mention anything about proximity or hall sensor. As this is quite a typical sensor found on most phones, we tend to believe that Apple has included this sensor in Apple Watch 6.

Conclusion

There may not be any Samsung Galaxy Active 3, and Samsung Galaxy Watch 4 will be a new upgrade for Galaxy Active 2 users.

We selected Galaxy Active 2 over Apple Watch because it was almost half the price. However, the blood pressure and oxygen apps were not available until late 2020, even though the watch already has the hardware for ECG.  Nevertheless, it was a long wait but worth the time, and it also saved us the money to buy the more expensive Apple Watch.

An important point to note is that the watch has to be compatible with the phone. This means Apple iPhone users should buy Apple Watch 6, and Samsung Galaxy phone users should buy Galaxy Watch 4. So the comparison should only matter if you buy the phone with the watch.

Below is the complete comparison table.

Comparison MatrixApple Watch Series 6Samsung Galaxy Watch 4
Tech Specs40mm44mm40mm44mm42mm Classic46mm Classic
Size (Watch Face)40x34mm44x38mm40.4×39.3mm44.4×43.3mm41.5×41.545.5×45.5
Thickness (incl. sensor)10.7mm10.7mm13.5mm13.5mm13.5mm13.5mm
Weight (no strap)30.5g (Aluminum)
39.7g (Stainless)
34.6g (Titanium)
36.5g (Aluminum)
47.1g (Stainless)
41.3g (Titanium)
26g (Alum.)30g (Alum.)47g (Stainless)52g (Stainless)
ChipS6 SiP w/64-bit dual-core, W3, U1Exynos W920 Dual Core 1.18GHz
Screen Resolution324 by 394 pixels
759 mm2
368 by 448 pixels
977 mm2
396×396(1.2″)450×450(1.4″)396×396(1.2″)450×450(1.4″)
GlassAluminum uses Ion X Glass
Stainless & Titanium uses Sapphire Crystal
Corning®
Gorilla® Glass
DX+
Corning®
Gorilla® Glass DX+
Corning®
Gorilla® Glass
DX
Corning® Gorilla®
Glass DX
Always On DisplayYesYes
IP RatingNoYes, IP68 (MIL-STD-810G), 50m
Water-Resistant50m, 164ft  (ISO 22810:2010)50m, 164ft (5 ATM) for 10 mins
Ram1GB1.5GB
Storage32GB16GB
Battery Size265.9 mAh303.8mAh247 mAh361 mAh247 mAh361 mAh
Battery LifeUp to 18 hours (actual ~24hrs)
Up to 40 hours (actual ~24hrs)
Max Charging Wattage5W5W
Charging TimeApprox. 1.5 hoursUp to 2 hours
LTEYes, selected modelsYes, selected models
Wi-Fi802.11b/g/n 2.4 & 5GHz802.11 a/b/g/n 2.4 & 5GHz
Bluetooth5.0 BLE5.0 BLE
GNSSA-GPS, Glonass, Galileo. QZSS (Jpn)A-GPS, Glonass and Galileo
NFCYesYes
CompassYesYes
AltimeterYesYes
BarometerYesYes
Light sensorYesYes
BIA SensorNoYes
Blood oxygen sensorVO2Max, SpO2VO2Max, SpO2
Electrical heart sensorYesYes
Optical heart sensorYes, 3rd GenYes
Hall sensorNoNoYes
AccelerometerUp to 32 g with fall detectionYes
GyroscopeYesYes
SpeakerYesYes
MicrophoneYesYes
PaymentApple PaySamsung Pay
Emergency CallYes, need Phone/LTEYes, need Phone/LTE
Emergency SOSYes, need LTE/Phone/Wi-FiYes, need a Phone/LTE
Fall DetectionYesYes
Warranty (years)1 or 2 years (depends on model)12 months

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