Xiaomi Amazfit Stratos 2S vs Samsung Galaxy Watch Active 2 (40mm SM-R835U)
Side by side comparison between Xiaomi Amazfit Stratos 2S vs Samsung Galaxy Watch Active 2 smartwatches, differences, pros, cons and full specifications. What's the better?
,
1.34"
TFT
TFT
320x300
N/A
512MB
RAM
RAM
Dual-core
290
mAh
mAh
(Non removable)
vs
1.2"
AMOLED
AMOLED
360x360
N/A
1.5GB
RAM
RAM
Dual-core
247
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!
6 Advantages 
17 Advantages | 14 Common items in both devices |
| Capacitive |
| Multitouch |
| Accelerometer |
| Ambient light sensor |
| Barometer |
| Heart rate |
| Pedometer |
| +7 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 | ||
| Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) | |
| Change model | ||
| Model | Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) |
| Other model names | Xiaomi Huami Amazfit 2 Stratos A1619, Amazfit Pace 2 | Galaxy Watch Active2 4G LTE SM-R835U (Stainless Steel) |
| Country or region available |  (Europe) |  USA |
| Brand | Xiaomi | Samsung |
| Release date | 12/12/2017 | 9/1/2019, Announced: 8/5/2019 |
| Depth | 15 millimeters (0.59 inches) | 10.9 millimeters (0.43 inches) |
| Size (width x height) | 25.4 x 51 millimeters (1 x 2.01 in) | 40 x 40 millimeters (1.57 x 1.57 in) |
| Weight | 68 grams (2.38 ounces) | 37 grams (1.3 ounces) |
| Build, materials | Plastic body with ceramic and stainless steel, glass front | Stainless steel body, glass front |
| Protection against water and others | 5 ATM: 50 meters waterproof | 5 ATM: 50 meters waterproof. MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. |
📲 Display | ||
| Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) | |
| Display type | TFT LCD | Super AMOLED |
| Screen size | 1.34" inches | 1.2" inches |
| Screen-to-body ratio | ~44.6% (screen-to-body ratio) | ~29% (screen-to-body ratio) |
| Display resolution | 320x300 pixels | 360x360 pixels (1:1) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 327 PPI | 424 PPI |
| Colors | 260 thousand | 16 million |
| Scratch-resistant glass | Sapphire Glass | Gorilla Glass DX+ |
| Refresh rate | feature not registered | feature not registered |
| Display features | feature not registered | Not supported |
🤖 Operating System | ||
| Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) | |
| System version | Proprietary OS | Tizen 4.0 |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) | |
| Chipset | 32bit: Ingenic M200S | 64bit: Samsung Exynos 9110 (10nm) |
| CPU | Dual-core, 2 processors: 1x 1.2GHz XBurst-HP (Single-core) 1x 300MHz XBurst-LP (Single-core) | Dual-core, 1 processor: 2x 1.15GHz ARM Cortex-A53 (Dual-core) |
| GPU graphical controller | 3D GPU | ARM Mali-T720 MP1 (667MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) | |
| RAM memory | 512MB LPDDR2 | 1.5GB LPDDR4 |
| Internal storage | 4GB (2GB available) eMCP | 4GB (1.39GB available) eMMC 5.1 |
| External storage | Not supported | Not supported |
📶 Mobile networks | ||
| Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | Not supported | 1 slot (Single-SIM) e-SIM (Eletronic) |
| Maximum Download / Upload | feature not registered | 150/50 Mbps |
| Network technology | feature not registered | 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 | Not supported | UMTS 850/900/2100 |
| Primary 4G network | Not supported | LTE Cat4 (1, 3, 5, 7, 8, 20) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | Not supported | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, 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 | ||
| Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) | |
| 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 | ||
| Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) | |
| 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 | ||
| Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | 1 microphone |
| Radio | Not supported | Not supported |
| TV | Not supported | Not supported |
| Video formats | feature not registered | MP4 |
| Audio formats | MP3, eAAC+ | MP3, WAV, WMA, OGG, eAAC+ |
🔌 Connectivity | ||
| Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) | |
| USB | MicroUSB 2.0 | Not supported |
| Audio output | Not supported | Not supported |
| TV output | Not supported | Not supported |
| Bluetooth | 4.0 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g [wifi3] (2.4GHz) | 802.11 b/g/n [wifi4] (2.4GHz) |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Not supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) | |
| Sensors | Accelerometer Ambient light sensor Barometer Compass Gyroscope Heart rate Pedometer | Accelerometer Ambient light sensor Barometer Heart rate Pedometer VO2 max |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 290 mAh | 247 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | Qi wireless charging |
| Talk time autonomy | 30 hours (1.3 days) | 43 hours (1.8 days) |
| Standby | 120 hours (5 days) | feature not registered |
➕ Other features | ||
| Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) | |
| Call control | Not supported | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS (T9), E-mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Not supported | Not supported |
| Ringtones | feature not registered | Polyphonic and customized |
| Web browser | Not supported | Not supported |
| Antenna | feature not registered | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Black • Leather watch band • 22mm standard watch band • 2.5D glass display • Dock charger included • Always-on display • Languages: Chinese, English, Spanish • Mi Fit app compatible • Compatible with Android 4.4, iOS 9 and above | • Colors: Black, Silver, Pink Gold • Bands: 20mm • Always-on display • Samsung Pay |
☢️ Radiation rate | ||
| Amazfit Stratos 2S | Galaxy Watch Active 2 (40mm SM-R835U) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.43W/kg (head), 1.13W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |