Samsung Galaxy Watch (42mm SM-R815U) vs Apple Watch 3 (Edition 42mm)
Side by side comparison between Samsung Galaxy Watch vs Apple Watch 3 smartwatches, differences, pros, cons and full specifications. What's the better?
,
1.2"
AMOLED
AMOLED
360x360
N/A
1.5GB
RAM
RAM
Dual-core
270
mAh
mAh
(Non removable)
vs
1.65"
AMOLED
AMOLED
390x312
N/A
768MB
RAM
RAM
Dual-core
352
mAh
mAh
(Non removable)
What's the better smartwatch? Apple Watch 3 (Edition 42mm)
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!
5 Advantages 
8 Advantages | 19 Common items in both devices |
| 16 million |
| 4G LTE |
| Capacitive |
| Multitouch |
| Accelerometer |
| Ambient light sensor |
| Barometer |
| +12 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| Galaxy Watch (42mm SM-R815U) | Apple Watch 3 (Edition 42mm) | |
| Model | Galaxy Watch (42mm SM-R815U) | Watch 3 (Edition 42mm) |
| Other model names | Galaxy Watch 42mm (4G LTE) SM-R815UZDAXAR, Samsung Galileo | Apple Watch Edition Series 3 GPS + Cellular (4G LTE) Ceramic |
| Country or region available |  USA |  (Global, International) |
| Brand | Samsung | Apple |
| Release date | 8/1/2018 | 9/22/2017 |
| Depth | 12.7 millimeters (0.5 inches) | 11.4 millimeters (0.45 inches) |
| Size (width x height) | 41.9 x 45.7 millimeters (1.65 x 1.8 in) | 36.5 x 42.6 millimeters (1.44 x 1.68 in) |
| Weight | 49 grams (1.72 ounces) | 46 grams (1.61 ounces) |
| Build, materials | Stainless steel body, glass front | Ceramic body, glass front |
| Protection against water and others | 5 ATM: 50 meters waterproof. MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. | 5 ATM: 50 meters waterproof |
📲 Display | ||
| Galaxy Watch (42mm SM-R815U) | Apple Watch 3 (Edition 42mm) | |
| Display type | Super AMOLED | AMOLED |
| Screen size | 1.2" inches | 1.65" inches |
| Screen-to-body ratio | ~24.3% (screen-to-body ratio) | ~55.1% (screen-to-body ratio) |
| Display resolution | 360x360 pixels (1:1) | 390x312 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 424 PPI | 303 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass DX+ | Sapphire Glass |
| Refresh rate | feature not registered | feature not registered |
| Display features | Not supported | feature not registered |
🤖 Operating System | ||
| Galaxy Watch (42mm SM-R815U) | Apple Watch 3 (Edition 42mm) | |
| System version | Tizen 4.0 | WatchOS 4.0 |
| Firmware update | feature not registered | WatchOS 5.0 |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Galaxy Watch (42mm SM-R815U) | Apple Watch 3 (Edition 42mm) | |
| Chipset | 64bit: Samsung Exynos 9 Dual 9110 (10nm) | 32bit: Apple S3 (28nm) |
| CPU | Dual-core, 1 processor: 2x 1.15GHz ARM Cortex-A53 (Dual-core) | Dual-core, 1 processor: 2x 1GHz ARM Cortex-A7 (Dual-core) |
| GPU graphical controller | ARM Mali-T720 MP1 | PowerVR G6200 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy Watch (42mm SM-R815U) | Apple Watch 3 (Edition 42mm) | |
| RAM memory | 1.5GB LPDDR3 | 768MB LPDDR4 |
| Internal storage | 4GB (1.5GB available) eMMC | 16GB (10GB available) |
| External storage | Not supported | Not supported |
📶 Mobile networks | ||
| Galaxy Watch (42mm SM-R815U) | Apple Watch 3 (Edition 42mm) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) e-SIM (Eletronic) | 1 slot (Single-SIM) e-SIM (Eletronic) |
| Maximum Download / Upload | 10 Mbps | 150/50 Mbps |
| Network technology | 3G, 4G | 2G, 3G, 4G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Not supported | Quad-Band 850/900/1800/1900 |
| Primary 2G network | Not supported | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/1700/1900 | A1891 model (Europe,Australia): UMTS 800/850/900/2100 A1861 model (USA,LATAM,Canada): UMTS 800/850/1700/1900 A1892 model (China): UMTS 2100 |
| Primary 4G network | LTE (Bands 2,4,5,12,13,25,26,66) | LTE Cat4 A1891 model (Europe,Australia): LTE (Bands 1,3,5,7,8,18,19,20,26) A1861 model (USA,LATAM,Canada): LTE (Bands 2,4,5,12,13,17,18,19,25,26) TD-LTE (Bands 41) A1892 model (China): LTE (Bands 1,3) TD-LTE (Bands 39,40,41) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | UMTS, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE |
| Secondary 2G network | Not supported | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | Not supported |
📷 Camera | ||
| Galaxy Watch (42mm SM-R815U) | Apple Watch 3 (Edition 42mm) | |
| Back camera (main camera) | Not supported | Not supported |
| Main camera resolution | Not supported | Not supported |
| Video recording (primary) | Not supported | Not supported |
| Flash | Not supported | Not supported |
| Focal aperture | feature not registered | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
| Autofocus | Not supported | Not supported |
| Touch focus | Not supported | Not supported |
| Image stabilization | Not supported | Not supported |
| Zoom | Not supported | Not supported |
| Face/smile detection | Not supported | Not supported |
| BSI sensor | Not supported | Not supported |
| HDR | Not supported | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Galaxy Watch (42mm SM-R815U) | Apple Watch 3 (Edition 42mm) | |
| Front camera (secondary) | Not supported | Not supported |
| Front camera resolution | Not supported | Not supported |
| Video recording (secondary) | Not supported | Not supported |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
🔉 Sound and multimedia | ||
| Galaxy Watch (42mm SM-R815U) | Apple Watch 3 (Edition 42mm) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | Not supported |
| Radio | Not supported | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4 | MP4, H.264, H.263 |
| Audio formats | MP3, WAV, WMA, OGG, eAAC+ | MP3, WAV, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy Watch (42mm SM-R815U) | Apple Watch 3 (Edition 42mm) | |
| USB | Not supported | Not supported |
| Audio output | Not supported | Not supported |
| TV output | Not supported | Not supported |
| Bluetooth | 4.2 + A2DP | 4.2 + A2DP |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 b/g/n [wifi4] (2.4GHz) |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy Watch (42mm SM-R815U) | Apple Watch 3 (Edition 42mm) | |
| Sensors | Accelerometer Ambient light sensor Barometer Gyroscope Heart rate Pedometer | Accelerometer Ambient light sensor Barometer Gyroscope Heart rate Pedometer |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy Watch (42mm SM-R815U) | Apple Watch 3 (Edition 42mm) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 270 mAh | 352 mAh |
| Charger, watts | 3.5W (5V/0.7A) Wired charging | Wired charging |
| Inductive / wireless charging | Qi wireless charging | Magnetic charging (dock) |
| Talk time autonomy | feature not registered | 18 hours |
| Standby | 72 hours (3 days) | feature not registered |
➕ Other features | ||
| Galaxy Watch (42mm SM-R815U) | Apple Watch 3 (Edition 42mm) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS, E-mail |
| Hands-free calling | Supported | Supported |
| Video calling | Not supported | Not supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | Not supported | Not supported |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • 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 | • Colors: White, Gray • Sport bands • 1000 nits screen • 3D Touch display • Siri |
☢️ Radiation rate | ||
| Galaxy Watch (42mm SM-R815U) | Apple Watch 3 (Edition 42mm) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.961W/kg (head), 1.786W/kg (body) | 0.35W/kg (head), 0.18W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |