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Samsung Galaxy Watch (42mm SM-R815U) vs Apple Watch (38mm)

Side by side comparison between Samsung Galaxy Watch vs Apple Watch smartwatches, differences, pros, cons with full specifications. What's the better?

Compare Apple Watch XSamsung Galaxy Watch (42mm SM-R815U)13Points
Samsung Galaxy Watch (42mm SM-R815U)




64bit Dual


(Non removable)

Apple Watch (38mm)




32bit Single


(Non removable)

What's the better smartwatch? Samsung Galaxy Watch (42mm SM-R815U)

The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!

Galaxy Watch (42mm SM-R815U)13 Advantages Samsung Galaxy Watch (42mm SM-R815U)vsWatch (38mm)4 Advantages Apple Watch (38mm)
+1.15Ghz 64bit Dual-Core2 times
More powerful processor, you can open your applications faster
vs520Mhz 32bit Single-Core
+1.5GB LPDDR32 times
More RAM memory. Typically more responsive and better for multitasking.
+49 grams (1.72 ounces)78%
vs87 grams (3.05 ounces)
+Super AMOLEDAdvantage
Super AMOLED display is brighter and more vivid
+360x360 pixels40%
Higher resolution screen
vs272x340 pixels
+424 PPI30%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
vs325 PPI
+4G LTEAdvantage
The 4G LTE network is newer and faster
vsNot supported
+(4G LTE) 10 MbpsAdvantage
Faster for surfing the internet and download files
vs(Not supported)
Sensors help you use the device
vsNot supported
+270 mAh32%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
vs205 mAh
+A-GPS, GeoTagging, GLONASSAdvantage
It's harder to lose yourself in the city with GPS on your device
vsNot supported
+4.2 + A2DPAdvantage
Bluetooth 4.2 + A2DP is newer and faster
vs4.0 + A2DP
+50 meters waterproof., MIL-STD-810G military certifiedAdvantage
Protection against water allows you talk to your friends in the rain, for example
vsIPX7 certified
4GB (1.5GB available)vs+8GB (6GB available)3 times
More internal storage for applications and files
12.7 millimeters (0.5 inches)vs+10.5 millimeters (0.41 inches)21%
Larger screen
1500 appsvs+1400000 apps (App Store)932 times
More apps available to download and use

17 Common items in both devices
Stainless steel body, glass front / Stainless steel body, glass front, ceramic back
16 million
Not supported
Ambient Light sensor
+10 specs and more in the table below

Check the comparison table below for more items that are not evaluated in comparison score above.

Highlight differencesClear highlight
Physical featuresSamsung Galaxy Watch (42mm SM-R815U)Apple Watch (38mm)
ModelGalaxy Watch (42mm SM-R815U)Watch (38mm)
Other model namesGalaxy Watch 42mm (4G LTE) SM-R815UZDAXAR, Samsung GalileoApple Watch 1st gen (2015) A1553 Stainless Steel
Country or region availableUSA
(Global, International)
(Global, International)
Release dateAugust, 2018April, 2015
Depth12.7 millimeters (0.5 inches)10.5 millimeters (0.41 inches)
Size (width x height)41.9 x 45.7 millimeters (1.65 x 1.8 in)33.3 x 38.6 millimeters (1.31 x 1.52 in)
Weight49 grams (1.72 ounces)87 grams (3.05 ounces)
Qwerty physical keyboardNot supportedNot supported
AntennaInternal antennaNot supported
Build, materialsStainless steel body, glass frontStainless steel body, glass front, ceramic back
Protection against water and others50 meters waterproof.
MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant.
IPX7 certified: water resistant up to 1 meter and 30min
System (OS)Samsung Galaxy Watch (42mm SM-R815U)Apple Watch (38mm)
Operating systemTizen 4.0WatchOS 1.0
Firmware updatefeature not registeredWatchOS 4.0
HardwareSamsung Galaxy Watch (42mm SM-R815U)Apple Watch (38mm)
Chipset64bit - Samsung Exynos 9 Dual 9110 (10nm)32bit - Apple S1 (28nm)
CPU processor1.15Ghz Dual-Core ARM Cortex-A53520Mhz Single-Core ARM Cortex-A7
GPU graphical controllerARM Mali-T720 MP1PowerVR SGX543
Internal storage4GB (1.5GB available)
8GB (6GB available)
External storageNot supportedNot supported
DisplaySamsung Galaxy Watch (42mm SM-R815U)Apple Watch (38mm)
Display typeSuper AMOLEDAMOLED
Screen size1.2" inches1.34" inches
Screen-to-body ratio~24.3% (screen-to-body ratio)~44% (screen-to-body ratio)
Display resolution360x360 pixels (1:1)272x340 pixels
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)424 PPI325 PPI
Colors16 million16 million
Scratch-resistant glassGorilla Glass DX+Sapphire Glass
Display featuresNot supportedfeature not registered
Mobile networksSamsung Galaxy Watch (42mm SM-R815U)Apple Watch (38mm)
Dual-SIMNot supportedNot supported
SIM card1 slot (Single-SIM)
e-SIM (Eletronic)
Not supported
Maximum download/upload10 Mbpsfeature not registered
Network technology3G, 4Gfeature not registered
Frequency, bandsExpand band detailsCollapse details
GSM Mhz bandNot supportedNot supported
Primary 2G networkNot supportedNot supported
Primary 3G networkUMTS 850/1700/1900Not supported
Primary 4G networkLTE (Bands 2,4,5,12,13,25,26,66)Not supported
Primary 5G networkNot supportedNot supported
Primary data networkUMTS, HSDPA, HSUPA, HSPA+, LTENot supported
Secondary 2G networkNot supportedNot supported
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkNot supportedNot supported
CallingSamsung Galaxy Watch (42mm SM-R815U)Apple Watch (38mm)
MessagingSMS (T9), MMS, E-mail, Push mailSMS, E-mail
Video callingNot supportedNot supported
Call controlVoice dialing, Voice recorder, Voice commandsNot supported
CameraSamsung Galaxy Watch (42mm SM-R815U)Apple Watch (38mm)
Back camera (main camera)Not supportedNot supported
Main camera resolutionNot supportedNot supported
Video recording (primary)Not supportedNot supported
FlashNot supportedNot supported
Focal aperturefeature not registeredfeature not registered
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registeredfeature not registered
AutofocusNot supportedNot supported
Touch focusNot supportedNot supported
Image stabilizationNot supportedfeature not registered
ZoomNot supportedNot supported
Face/smile detectionNot supportedNot supported
BSI sensorNot supportedNot supported
HDRNot supportedNot supported
2ª cameraSamsung Galaxy Watch (42mm SM-R815U)Apple Watch (38mm)
Front camera (secondary)Not supportedNot supported
Front camera resolutionNot supportedNot supported
Video recording (secondary)Not supportedNot supported
Front flashNot supportedNot supported
Focal aperturefeature not registeredfeature not registered
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registeredfeature not registered
MultimediaSamsung Galaxy Watch (42mm SM-R815U)Apple Watch (38mm)
RadioNot supportedNot supported
TVNot supportedNot supported
Video formatsMP4MP4, H.264, H.263
Audio formatsMP3, WAV, WMA, OGG, eAAC+MP3, WAV, eAAC+, FLAC
ConnectivitySamsung Galaxy Watch (42mm SM-R815U)Apple Watch (38mm)
USBNot supportedNot supported
TV outputNot supportedNot supported
Audio outputNot supportedNot supported
Bluetooth4.2 + A2DP4.0 + A2DP
WiFi802.11 b/g/n (2.4Ghz)802.11 b/g/n (2.4Ghz)
DLNANot supportedNot supported
GPSA-GPS, GeoTagging, GLONASSNot supported
Infrared portNot supportedNot supported
Other functionsSamsung Galaxy Watch (42mm SM-R815U)Apple Watch (38mm)
Active noise cancellationNot supportedNot supported
Vibrating alertSupportedSupported
RingtonesPolyphonic and customizedfeature not registered
Web browserNot supportedNot supported
Ambient Light sensor
Heart rate
Ambient Light sensor
Heart rate
Other features- Colors: Midnight Black, Rose Gold
- Straps: Black, Grey, Red, Yellow, Purple, Pink, Brown
- Compatible with standard 20mm straps
- Always-on display
- Rotating bezel
- Samsung Pay
- Compatible with Sprint, T-Mobile and Verizon carriers
- Watch colors: Silver, Space gray
- Watch bands: White, Black, Blue, Pink, Brown, Gray, Steel
- Band material: Leather, Stainless steel, Fluoroelastomer plastic
- iOS 8.2 or higher compatible
- Digital Crown
- MagSafe charging
Power supplySamsung Galaxy Watch (42mm SM-R815U)Apple Watch (38mm)
BatteryLi-Ion: Lithium-Ion (Non removable)Li-Ion: Lithium-Ion (Non removable)
Battery capacity270 mAh205 mAh
Charger, watts3.5W (5V/0.7A) Standard charging
Qi wireless charging
Standard charging
Magnetic charging (dock)
Talk time autonomyfeature not registered180 minutes | 3 hours | 0.1 day
Standby4320 minutes | 72 hours | 3 days1080 minutes | 18 hours | 0.8 day
Radiation rateSamsung Galaxy Watch (42mm SM-R815U)Apple Watch (38mm)
SAR 1.6W/kg (USA, Mexico, etc.)0.961W/kg (head) | 1.786W/kg (body)feature not registered
SAR 2W/kg (Europe, UK, etc.)feature not registeredfeature not registered

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