Samsung Galaxy Watch Active 2 (40mm SM-R835U) vs Samsung Gear S (3G SM-R750)
Side by side comparison between Samsung Galaxy Watch Active 2 vs Samsung Gear S smartwatches, differences, pros, cons and full specifications. What's the better?
,
1.2"
AMOLED
AMOLED
360x360
N/A
1.5GB
RAM
RAM
Dual-core
247
mAh
mAh
(Non removable)
vs
2"
AMOLED
AMOLED
360x480
N/A
512MB
RAM
RAM
Dual-core
300
mAh
mAh
(Non removable)
What's the better smartwatch? Samsung Galaxy Watch Active 2 (40mm SM-R835U)
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!
13 Advantages 
9 Advantages | 13 Common items in both devices |
| Super AMOLED |
| 16 million |
| Capacitive |
| Multitouch |
| Accelerometer |
| Ambient light sensor |
| Barometer |
| +6 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 Active 2 (40mm SM-R835U) | Samsung Gear S (3G SM-R750) | |
| Model | Galaxy Watch Active 2 (40mm SM-R835U) | Gear S (3G SM-R750) |
| Other model names | Galaxy Watch Active2 4G LTE SM-R835U (Stainless Steel) | Samsung Gear S R750, Samsung Gear S SM-R750, Samsung SM-R750 |
| Country or region available |  USA |  (Global, International) |
| Brand | Samsung | Samsung |
| Release date | 9/1/2019 | 10/1/2014 |
| Depth | 10.9 millimeters (0.43 inches) | 12.5 millimeters (0.49 inches) |
| Size (width x height) | 40 x 40 millimeters (1.57 x 1.57 in) | 39.9 x 58.1 millimeters (1.57 x 2.29 in) |
| Weight | 37 grams (1.3 ounces) | 67 grams (2.35 ounces) |
| Build, materials | Stainless steel body, glass front | feature not registered |
| 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. | Waterproof (IP?) |
📲 Display | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S (3G SM-R750) | |
| Display type | Super AMOLED | Super AMOLED |
| Screen size | 1.2" inches | 2" inches |
| Screen-to-body ratio | ~29% (screen-to-body ratio) | ~53.4% (screen-to-body ratio) |
| Display resolution | 360x360 pixels (1:1) | 360x480 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 424 PPI | 300 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass DX+ | Gorilla Glass 3 |
| Refresh rate | feature not registered | feature not registered |
| Display features | Not supported | feature not registered |
🤖 Operating System | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S (3G SM-R750) | |
| System version | Tizen 4.0 | Tizen 2.3 |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S (3G SM-R750) | |
| Chipset | 64bit: Samsung Exynos 9 Dual 9110 (10nm) | 32bit: Samsung Exynos 4212 |
| CPU | Dual-core, 1 processor: 2x 1.15GHz ARM Cortex-A53 (Dual-core) | Dual-core, 1 processor: 2x 1GHz ARM Cortex-A9 (Dual-core) |
| GPU graphical controller | ARM Mali-T720 MP1 | ARM Mali-400 MP4 400Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S (3G SM-R750) | |
| RAM memory | 1.5GB LPDDR3 | 512MB |
| Internal storage | 4GB (1.39GB available) eMMC | 4GB (2GB available) |
| External storage | Not supported | Not supported |
📶 Mobile networks | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S (3G SM-R750) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) e-SIM (Eletronic) | 1 slot (Single-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 150/50 Mbps | 21/5.76 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Dual-Band 900/1800 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 900/1800 |
| Primary 3G network | UMTS 850/900/2100 | UMTS 850/2100 |
| Primary 4G network | LTE Cat4 (1, 3, 5, 7, 8, 20) | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ |
| 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 Active 2 (40mm SM-R835U) | Samsung Gear S (3G SM-R750) | |
| 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 | feature not registered |
| 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 Active 2 (40mm SM-R835U) | Samsung Gear S (3G SM-R750) | |
| 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 Active 2 (40mm SM-R835U) | Samsung Gear S (3G SM-R750) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | Not supported |
| Radio | Not supported | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4 | feature not registered |
| Audio formats | MP3, WAV, WMA, OGG, eAAC+ | MP3, WAV, WMA, eAAC+ |
🔌 Connectivity | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S (3G SM-R750) | |
| USB | Not supported | MicroUSB 2.0 |
| Audio output | Not supported | Not supported |
| TV output | Not supported | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 4.1 + 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, GALILEO, BeiDou | A-GPS, GeoTagging, GLONASS |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Supported |
🧭 Sensors | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S (3G SM-R750) | |
| Sensors | Accelerometer Ambient light sensor Barometer Heart rate Pedometer VO2 max | Accelerometer Ambient light sensor Barometer Compass Gyroscope Heart rate Proximity sensor UV radiation |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S (3G SM-R750) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 247 mAh | 300 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | Qi wireless charging | feature not registered |
| Talk time autonomy | 43 hours (1.8 days) | 5 hours |
| Standby | feature not registered | 96 hours (4 days) |
➕ Other features | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S (3G SM-R750) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), 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: Black, Silver, Pink Gold • Bands: 20mm • Always-on display • Samsung Pay | • Colors: Black • S-Voice • S-Health • IP67 certified: dust and water resistant up to 1 meter and 30min |
☢️ Radiation rate | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S (3G SM-R750) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.43W/kg (head), 1.13W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.557W/kg (head), 0.653W/kg (body) |