Samsung Galaxy J3 Aura (SM-J337R4) vs Xiaomi Redmi Watch (WT02)
Side by side comparison between Samsung Galaxy J3 Aura vs Xiaomi Redmi Watch devices, differences, pros, cons and full specifications. What's the better?
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What's the better device? Samsung Galaxy J3 Aura (SM-J337R4)
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!
17 Advantages 
8 Advantages | 10 Common items in both devices |
| 16GB (9GB available) / Not supported |
| Plastic body, glass front |
| TFT IPS LCD |
| Capacitive |
| Multitouch |
| Accelerometer |
| Compass |
| +3 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 J3 Aura (SM-J337R4) | Redmi Watch (WT02) | |
| Change model | ||
| Model | Galaxy J3 Aura (SM-J337R4) | Redmi Watch (WT02) |
| Other model names | Galaxy J3 2018 (US Cellular) SM-J337RZKAUSC | Redmi Watch REDMIWT02, REDMI-WT02 (GPS) |
| Country or region available |  USA |  India |
| Brand | Samsung | Xiaomi |
| Release date | 5/1/2018 | 5/13/2021 |
| Depth | 9 millimeters (0.35 inches) | 11.9 millimeters (0.47 inches) |
| Size (width x height) | 70.2 x 142.8 millimeters (2.76 x 5.62 in) | 35 x 41 millimeters (1.38 x 1.61 in) |
| Weight | 152 grams (5.32 ounces) | 22 grams (.77 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | 5 ATM: 50 meters waterproof |
📲 Display | ||
| Galaxy J3 Aura (SM-J337R4) | Redmi Watch (WT02) | |
| Display type | TFT IPS LCD | TFT IPS LCD |
| Screen size | 5" inches | 1.4" inches |
| Screen-to-body ratio | ~68.8% (screen-to-body ratio) | ~44.1% (screen-to-body ratio) |
| Display resolution | 720x1280 pixels | 320x320 pixels (1:1) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 294 PPI | 323 PPI |
| Colors | 16 million | 260 thousand |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | feature not registered | feature not registered |
| Display features | feature not registered | 350nits[typ] |
🤖 Operating System | ||
| Galaxy J3 Aura (SM-J337R4) | Redmi Watch (WT02) | |
| System version | Android 8.0 Oreo | Proprietary OS |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Galaxy J3 Aura (SM-J337R4) | Redmi Watch (WT02) | |
| Chipset | 64bit: Samsung Exynos 7570 (14nm) | 32bit |
| CPU | Quad-core, 1 processor: 4x 1.4GHz ARM Cortex-A53 (Quad-core) | Single-core, 1 processor: Single-core |
| GPU graphical controller | ARM Mali-T720 MP1 (830MHz) | 3D GPU |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy J3 Aura (SM-J337R4) | Redmi Watch (WT02) | |
| RAM memory | 2GB LPDDR3 | feature not registered |
| Internal storage | 16GB (9GB available) eMMC 5.0 | Not supported |
| External storage | Until 512GB microSD, microSDXC (dedicated slot) | Not supported |
📶 Mobile networks | ||
| Galaxy J3 Aura (SM-J337R4) | Redmi Watch (WT02) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) | Not supported |
| Maximum Download / Upload | 150/50 Mbps | feature not registered |
| Network technology | 2G, 3G, 4G | feature not registered |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Not supported |
| Primary 2G network | CDMA 800/1900, GSM 850/900/1800/1900 | Not supported |
| Primary 3G network | CDMA2000 1xEV-DO UMTS 850/1700/1900 | Not supported |
| Primary 4G network | LTE Cat4 (Bands 2, 4, 5, 12, 25) | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, LTE | Not supported |
| 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 J3 Aura (SM-J337R4) | Redmi Watch (WT02) | |
| Back camera (main camera) | 8 megapixels | Not supported |
| Main camera resolution | 3264x2448 pixels | Not supported |
| Video recording (primary) | Full HD (1920x1080) 30 fps | Not supported |
| Flash | LED flash | Not supported |
| Focal aperture | f/1.9 (aperture) | 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 | Autofocus | Not supported |
| Touch focus | Supported | Not supported |
| Image stabilization | EIS: Digital stabilization | Not supported |
| Zoom | Only digital zoom | Not supported |
| Face/smile detection | Face detection, Smile detection | Not supported |
| BSI sensor | Not supported | Not supported |
| HDR | HDR photo only main camera | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Galaxy J3 Aura (SM-J337R4) | Redmi Watch (WT02) | |
| Front camera (secondary) | 5 megapixels | Not supported |
| Front camera resolution | 2560x1920 pixels | Not supported |
| Video recording (secondary) | Full HD (1920x1080) | Not supported |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.2 (aperture) | 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 J3 Aura (SM-J337R4) | Redmi Watch (WT02) | |
| Loudspeaker | Supported | feature not registered |
| Active noise cancellation | Not supported | Not supported |
| Radio | FM | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263, XviD, MKV | feature not registered |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, eAAC+ |
🔌 Connectivity | ||
| Galaxy J3 Aura (SM-J337R4) | Redmi Watch (WT02) | |
| USB | MicroUSB 2.0 | Not supported |
| Audio output | 3.5mm jack | Not supported |
| TV output | Not supported | Not supported |
| Bluetooth | 4.2 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) WiFi Direct, hotspot | Not supported |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS |
| NFC | Not supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy J3 Aura (SM-J337R4) | Redmi Watch (WT02) | |
| Sensors | Accelerometer Compass Gyroscope Proximity sensor | Accelerometer Barometer Compass Gyroscope Heart rate Pedometer |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy J3 Aura (SM-J337R4) | Redmi Watch (WT02) | |
| Battery type | Li-Ion: lithium-ion (Removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 2600 mAh | 230 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | Magnetic charging (dock) |
| Talk time autonomy | 29 hours (1.2 days) | feature not registered |
| Standby | 228 hours (9.5 days) | 240 hours (10 days) |
➕ Other features | ||
| Galaxy J3 Aura (SM-J337R4) | Redmi Watch (WT02) | |
| Call control | Voice dialing, Voice recorder | Not supported |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS, E-mail |
| Hands-free calling | Supported | Not supported |
| Video calling | Supported | Not supported |
| Ringtones | Polyphonic and customized | feature not registered |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | feature not registered |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Black | • Colors: Black, Blue, Ivory • Strap/bands: Black, Blue, Ivory, Olive • 2.5D curved display • Android/iOS compatible • Watch faces (+200) |
☢️ Radiation rate | ||
| Galaxy J3 Aura (SM-J337R4) | Redmi Watch (WT02) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.93W/kg (head), 1.56W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |