Samsung Galaxy Watch (42mm SM-R815U) vs Xiaomi Redmi 8A (32GB/3GB)
Side by side comparison between Samsung Galaxy Watch vs Xiaomi Redmi 8A devices, 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
6.2"
IPS
IPS
720x1520
12
MP
MP
8mp
3GB
RAM
RAM
Octa-core
5000
mAh
mAh
(Non removable)
What's the better device? Xiaomi Redmi 8A (32GB/3GB)
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!
10 Advantages 
23 Advantages | 11 Common items in both devices |
| 16 million |
| 4G LTE |
| Capacitive |
| Multitouch |
| Accelerometer |
| Ambient light sensor |
| Li-Ion: lithium-ion (Non removable) / LiPo: li-ion polymer (Non removable) |
| +4 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) | Redmi 8A (32GB/3GB) | |
| Model | Galaxy Watch (42mm SM-R815U) | Redmi 8A (32GB/3GB) |
| Other model names | Galaxy Watch 42mm (4G LTE) SM-R815UZDAXAR, Samsung Galileo | Xiaomi Redmi 8A M1908C3KG, MZB8298IN, MZB8299IN, MZB8369IN |
| Country or region available |  USA |    (Global, International), China, India |
| Brand | Samsung | Xiaomi |
| Release date | 8/1/2018 | 9/1/2019 |
| Depth | 12.7 millimeters (0.5 inches) | 9.4 millimeters (0.37 inches) |
| Size (width x height) | 41.9 x 45.7 millimeters (1.65 x 1.8 in) | 75.4 x 156.3 millimeters (2.97 x 6.15 in) |
| Weight | 49 grams (1.72 ounces) | 188 grams (6.58 ounces) |
| Build, materials | Stainless steel body, glass front | Plastic 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. | Water repellent nano-coating (don't immerse) |
📲 Display | ||
| Galaxy Watch (42mm SM-R815U) | Redmi 8A (32GB/3GB) | |
| Display type | Super AMOLED | TFT IPS LCD |
| Screen size | 1.2" inches | 6.2" inches |
| Screen-to-body ratio | ~24.3% (screen-to-body ratio) | ~81.4% (screen-to-body ratio) |
| Display resolution | 360x360 pixels (1:1) | 720x1520 pixels (19:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 424 PPI | 271 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass DX+ | Gorilla Glass 5 |
| Refresh rate | feature not registered | 60Hz |
| Display features | Not supported | 400nits[typ] |
🤖 Operating System | ||
| Galaxy Watch (42mm SM-R815U) | Redmi 8A (32GB/3GB) | |
| System version | Tizen 4.0 | Android 9.0 Pie |
| Firmware update | feature not registered | feature not registered |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Galaxy Watch (42mm SM-R815U) | Redmi 8A (32GB/3GB) | |
| Chipset | 64bit: Samsung Exynos 9 Dual 9110 (10nm) | 64bit: Qualcomm Snapdragon 439 SDM439 (12nm) |
| CPU | Dual-core, 1 processor: 2x 1.15GHz ARM Cortex-A53 (Dual-core) | Octa-core, 2 processors: 2x 2GHz ARM Cortex-A53 (Dual-core) 6x 1.45GHz ARM Cortex-A53 (Hexa-core) |
| GPU graphical controller | ARM Mali-T720 MP1 | Qualcomm Adreno 505 650Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy Watch (42mm SM-R815U) | Redmi 8A (32GB/3GB) | |
| RAM memory | 1.5GB LPDDR3 | 3GB LPDDR3 |
| Internal storage | 4GB (1.5GB available) eMMC | 32GB (21GB available) eMMC 5.1 |
| External storage | Not supported | Until 512GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy Watch (42mm SM-R815U) | Redmi 8A (32GB/3GB) | |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 1 slot (Single-SIM) e-SIM (Eletronic) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| 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 | CDMA 800 (China), GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/1700/1900 | Global, India version: UMTS 850/900/1900/2100 China version: CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 850/900/1900/2100 |
| Primary 4G network | LTE (Bands 2,4,5,12,13,25,26,66) | LTE Cat4 VoLTE Global version: LTE (Bands 1, 2, 3, 4, 5, 7, 8, 20) TD-LTE (Bands 38, 40) India version: LTE (Bands 1, 3, 5, 8) TD-LTE (Bands 40, 41) China version: LTE (Bands 1, 3, 5, 7, 8) TD-LTE (Bands 34, 38, 39, 40, 41) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | UMTS, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE |
| Secondary 2G network | Not supported | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | GPRS, EDGE |
📷 Camera | ||
| Galaxy Watch (42mm SM-R815U) | Redmi 8A (32GB/3GB) | |
| Back camera (main camera) | Not supported | 12 megapixels |
| Main camera resolution | Not supported | 4000x3000 pixels |
| Video recording (primary) | Not supported | Full HD (1920x1080) 30 fps |
| Flash | Not supported | LED flash |
| Focal aperture | feature not registered | f/1.8 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | 1/2.55" inches |
| Pixel size | feature not registered | 1.4µm pixel |
| Autofocus | Not supported | PDAF: phase detection autofocus |
| Touch focus | Not supported | Supported |
| Image stabilization | Not supported | EIS: Digital stabilization |
| Zoom | Not supported | Only digital zoom |
| Face/smile detection | Not supported | Face detection, Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | Not supported | HDR photo on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Galaxy Watch (42mm SM-R815U) | Redmi 8A (32GB/3GB) | |
| Front camera (secondary) | Not supported | 8 megapixels |
| Front camera resolution | Not supported | 3264x2448 pixels |
| Video recording (secondary) | Not supported | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.0 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | 1/4" inches |
| Pixel size | feature not registered | 1.12µm pixel |
🔉 Sound and multimedia | ||
| Galaxy Watch (42mm SM-R815U) | Redmi 8A (32GB/3GB) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | 2 microphones or more |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4 | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, OGG, eAAC+ | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy Watch (42mm SM-R815U) | Redmi 8A (32GB/3GB) | |
| USB | Not supported | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | Not supported | 3.5mm jack |
| 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) WiFi Direct, hotspot |
| DLNA | Not supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy Watch (42mm SM-R815U) | Redmi 8A (32GB/3GB) | |
| Sensors | Accelerometer Ambient light sensor Barometer Gyroscope Heart rate Pedometer | Accelerometer Ambient light sensor Compass Face unlock Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy Watch (42mm SM-R815U) | Redmi 8A (32GB/3GB) | |
| Battery type | Li-Ion: lithium-ion (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 270 mAh | 5000 mAh |
| Charger, watts | 3.5W (5V/0.7A) Wired charging | 18W (9V/2A) Wired fast charging |
| Inductive / wireless charging | Qi wireless charging | feature not registered |
| Talk time autonomy | feature not registered | 42 hours (1.8 days) |
| Standby | 72 hours (3 days) | feature not registered |
➕ Other features | ||
| Galaxy Watch (42mm SM-R815U) | Redmi 8A (32GB/3GB) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Not supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | Not supported | HTML, XHTML, HTML5 |
| 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: Midnight Black, Ocean Blue, Sunset Red • MIUI 11 • Sony IMX363 back camera sensor • Quick Charge 3.0 |
☢️ Radiation rate | ||
| Galaxy Watch (42mm SM-R815U) | Redmi 8A (32GB/3GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.961W/kg (head), 1.786W/kg (body) | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |