Samsung Galaxy Watch Active 2 (40mm SM-R835U) vs Samsung Gear S2 (3G SM-R730A)
Side by side comparison between Samsung Galaxy Watch Active 2 vs Samsung Gear S2 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
1.2"
AMOLED
AMOLED
360x360
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!
11 Advantages 
3 Advantages | 17 Common items in both devices |
| Super AMOLED |
| 16 million |
| 360x360 pixels |
| 424 PPI |
| 1.2" |
| Capacitive |
| Multitouch |
| +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 differences Clear highlight📱 Model features | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S2 (3G SM-R730A) | |
| Model | Galaxy Watch Active 2 (40mm SM-R835U) | Gear S2 (3G SM-R730A) |
| Other model names | Galaxy Watch Active2 4G LTE SM-R835U (Stainless Steel) | AT&T Samsung Gear S2 SM-R730A, Samsung Orbis |
| Country or region available |  USA | USA |
| Brand | Samsung | Samsung |
| Release date | 9/1/2019 | 11/1/2015 |
| Depth | 10.9 millimeters (0.43 inches) | 13.4 millimeters (0.53 inches) |
| Size (width x height) | 40 x 40 millimeters (1.57 x 1.57 in) | 44 x 51.8 millimeters (1.73 x 2.04 in) |
| Weight | 37 grams (1.3 ounces) | 51 grams (1.79 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 S2 (3G SM-R730A) | |
| Display type | Super AMOLED | Super AMOLED |
| Screen size | 1.2" inches | 1.2" inches |
| Screen-to-body ratio | ~29% (screen-to-body ratio) | ~20.4% (screen-to-body ratio) |
| Display resolution | 360x360 pixels (1:1) | 360x360 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 424 PPI | 424 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 S2 (3G SM-R730A) | |
| System version | Tizen 4.0 | Tizen 2.3 |
| Firmware update | feature not registered | Tizen 2.3.2 |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S2 (3G SM-R730A) | |
| Chipset | 64bit: Samsung Exynos 9 Dual 9110 (10nm) | 32bit: Qualcomm Snapdragon 400 MSM8x26 |
| 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 | Qualcomm Adreno 305 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S2 (3G SM-R730A) | |
| 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 S2 (3G SM-R730A) | |
| 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 | 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 850/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 850/1900 |
| Primary 3G network | UMTS 850/900/2100 | UMTS 850/1900 |
| 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 S2 (3G SM-R730A) | |
| 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 S2 (3G SM-R730A) | |
| 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 S2 (3G SM-R730A) | |
| 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 S2 (3G SM-R730A) | |
| USB | Not supported | Not supported |
| 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 |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S2 (3G SM-R730A) | |
| Sensors | Accelerometer Ambient light sensor Barometer Heart rate Pedometer VO2 max | Accelerometer Ambient light sensor Barometer Gyroscope Heart rate |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S2 (3G SM-R730A) | |
| 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 | 48 hours (2 days) |
➕ Other features | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S2 (3G SM-R730A) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS, MMS, 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, White • Stainless Steel body • Samsung Pay • S-Voice, S-Health • Wireless Charging (Qi) • IP68 certified: dust and water resistant up to 1.5m and 30min |
☢️ Radiation rate | ||
| Galaxy Watch Active 2 (40mm SM-R835U) | Samsung Gear S2 (3G SM-R730A) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.43W/kg (head), 1.13W/kg (body) | 0.737W/kg (head), 0.893W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |