| Samsung Galaxy S21 Plus 256GB |
Oppo A3s |
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| Hardware and OS | Samsung Galaxy S21 Plus 256GB | Oppo A3s |
| Operating system | Android v11 | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Octa core (2.9 GHz, Single core, Cortex X1 2.8 GHz, Tri core, Cortex A78 2.2 GHz, Quad core, Cortex A55) | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Samsung Exynos 2100 | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Adreno 506 | |
| RAM | 8 GB | |
| Internal memory | 256 GB | 16 GB, 2 GB RAM |
| External memory | microSD, up to 256 GB (dedicated slot) | |
| Expandable Memory | No | |
| Custom UI | Samsung One UI | |
| Graphics | Mali-G78 MP14 | |
| Display | Samsung Galaxy S21 Plus 256GB | Oppo A3s |
| Type | IPS LCD | |
| Size | 6.2" inc | |
| Resolution | 1080 x 2400 pixels | 720 x 1520 px |
| Screen Size | 6.7 inches (17.02 cm) | |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | 81.2% | |
| Display Type | Dynamic AMOLED | |
| Display area | 95.9 cm2 | |
| Display aspect ratio | 19:9 (height:width) | |
| Touch Screen | Yes, Capacitive Touchscreen, Multi-touch | |
| Pixel Density | 393 ppi | 271 PPI |
| Screen Protection | Corning Gorilla Glass, | |
| Colors | 16M | |
| Aspect Ratio | 20:9 | |
| Connectivity | Samsung Galaxy S21 Plus 256GB | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 2100 | |
| 4G Network | LTE | |
| Wi-Fi | Yes, Wi-Fi 802.11, a/ac/b/g/n/n 5GHz | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | 5G, 4G , 3G, 2G | GSM / HSPA / LTE |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | |
| Bluetooth | Yes, v5.1 | 4.2, A2DP, LE |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes with A-GPS, Glonass | Yes, with A-GPS |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps | |
| USB | microUSB 2.0, USB On-The-Go | |
| SIM 1 | 4G Bands: TD-LTE 2300(band 40) FD-LTE 1800(band 3) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available | |
| SIM 2 | 4G Bands: TD-LTE 2300(band 40) FD-LTE 1800(band 3) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available | |
| NFC | Yes | |
| VoLTE | Yes | |
| Wi-Fi Features | Mobile Hotspot | |
| USB Connectivity | Mass storage device, USB charging | |
| Main Camera | Samsung Galaxy S21 Plus 256GB | Oppo A3s |
| Image Resolution | 4000 x 3000 Pixels | |
| Flash | Yes, LED Flash | |
| Camera Features | Digital Zoom Auto Flash Face detection Touch to focus | |
| Autofocus | Yes, Phase Detection autofocus, Dual Pixel autofocus | |
| Camera Setup | Triple | |
| Video Recording | 7680x4320 @ 24 fps 3840x2160 @ 30 fps 1920x1080 @ 60 fps 1280x720 @ 960 fps | |
| Settings | Exposure compensation, ISO control | |
| Front Camera | Samsung Galaxy S21 Plus 256GB | Oppo A3s |
| Resolution | 10 MP f/2.2, Wide Angle Primary Camera(26 mm focal length, 3.2" sensor size, 1.22µm pixel size) | |
| Autofocus | Yes, Phase Detection autofocus, Dual Pixel autofocus | |
| Camera Setup | Single | |
| Video Recording | 3840x2160 @ 30 fps | |
| Camera | Samsung Galaxy S21 Plus 256GB | Oppo A3s |
| Main camera | 13 MP, Dual | |
| Specs | 13 MP, f/2.2, AF -2 MP, f/2.4, depth sensor | |
| Features | LED flash, HDR, panorama | |
| Video | 1080p@30fps | |
| Selfie camera | 8 MP, Single | |
| Multimedia | Samsung Galaxy S21 Plus 256GB | Oppo A3s |
| 3.5 mm Jack | Yes | |
| Radio | FM radio | |
| Audio Jack | USB Type-C | |
| FM Radio | No | |
| Design | Samsung Galaxy S21 Plus 256GB | Oppo A3s |
| Colors | Red, Dark Purple | |
| Dimensions | 156.2 x 75.6 x 8.2 mm | |
| Weight | 202 grams | 168 g |
| Height | 161.5 mm | |
| Width | 75.6 mm | |
| Thickness | 7.8 mm | |
| Colours | Phantom Silver, Phantom Black, Phantom Violet | |
| Waterproof | Yes, Water resistant (up to 30 minutes in a depth of 1.5 meter), IP68 | |
| Ruggedness | Dust proof | |
| Battery | Samsung Galaxy S21 Plus 256GB | Oppo A3s |
| Battery capacity | 4230 mAh, Non-removable Li-Ion | |
| Type | Li-ion | |
| Capacity | 4800 mAh | |
| Removable | No | |
| Quick Charging | Yes, Fast, 25W | |
| USB Type-C | Yes | |
| Wireless Charging | Yes | |
| Other | Samsung Galaxy S21 Plus 256GB | Oppo A3s |
| Release date | 2018, July | |
| Sensors | Accelerometer, proximity, compass | |
| Features | Samsung Galaxy S21 Plus 256GB | Oppo A3s |
| Fingerprint Sensor | Yes | |
| Other Sensors | Light sensor, Proximity sensor, Accelerometer, Barometer, Compass, Gyroscope |
