When comparing Apple Watch vs Samsung Gear S2 3G, the Slant community recommends Apple Watch for most people. In the question“What are the best smartwatches for fitness and health?” Apple Watch is ranked 2nd while Samsung Gear S2 3G is ranked 4th. The most important reason people chose Apple Watch is:
Health apps downloaded on iPhone can be integrated with Apple Watch
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Pros
Pro Works well with iPhone
Health apps downloaded on iPhone can be integrated with Apple Watch
Pro Haptic feedback for notifications
Pro Heart rate sensor
Pro First -rate app support
Pro Digital Crown
The Digital Crown allows you to zoom in and out with various applications and can be used as a button.
Pro Sensitive touch
Allows for taps and presses to be registered as two different types of input.
Pro Standalone phone calls
Series 3 can make and receive phone calls by itself, without the need to connect to a smartphone.
Pro Can unlock your Mac
If you have a Mac with sufficient Bluetooth chip support the Apple Watch can be used in place of your password or touch ID to login/unlock the system when in proximity.
Pro Customizable watch faces
Can customize the watch faces with "complications" such as weather forecast, traffic, meeting schedule, etc… or your own photos.
Pro Great fitness app support
The Apple Watch integrates with virtually every well-known fitness and calorie tracking app out there.
Pro Siri / Digital Assistant Support
You can use Siri directly from the Apple Watch, allowing you to call or text, but also to get directions, and more.
Pro Intuitive interface
Either the dial or swiping can be used to navigate between screens. You access widgets right of the watchface and notifications left of the watchface. You can use the dial to select an app, a button on the side to take a step back or a different button on the side to return to the homescreen.
Pro Has a dial that makes interacting with the device easy
The watch has a rotating bezel for interface navigation that's both intuitive to use and provides actual tactile feedback.
Pro Includes a plethora of sensors
Gear S2 3G includes an accelerometer, a barometer, a gyroscope, a heart rate monitor, a proximity sensor, a compass, and a UV light sensor enabling developers to get very creative with their apps.
Pro Supports wireless charging
Pro Good screen
S2 has a 1.2" 360 x 360 (302ppi) Super AMOLED display. It's bright enough to use outdoors and has good viewing angles.
Pro Elegant design
It has a stainless steel body that makes it feel like a high quality product.
Pro Battery can last more than 2 days
There's a 300mah battery inside the S2 3G. It lasts 2 days on average with ambient lighting off and 1 day with ambient lighting on.
Pro Water and dust resistant
The product is IP68 certified. The certification guarantees that the product can be submerged up to a meter and a half in water at room temperature for up to 30 minutes.
Pro Built-in speaker and microphone
Cons
Con Expensive
Apple Watch is said to cost $349 USD.
Con Works only with iPhones
You need to have an iPhone (5 or later) to pair this smartwatch. It will not work with any other device, and has limited capabilities on its own (and still require the iPhone for the initial setup).
Con Tizen ecosystem lacks quality apps
S2 runs Samsung's own Tizen operating system. It currently has a lot less apps than Android Wear or Apple's Watch OS and a lot of third-party apps perform badly on the device. It's unclear if developers will start to develop Tizen apps in the near future.
Con Somewhat thick
S2 3G is 0.52" (13.4mm) thick.
Con Built-in voice controls are lacking
Con Proprietary strap mounts on the standard model
Because the strap mounts for the standard model are unique, it will be difficult to find different straps to use with the watch. The S2 Classic has standard 20mm quick-release pins, but that is not available as a 3G variant.