| Umidigi Bison 2 Pro |
Oppo A3s |
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| Hardware and OS | Umidigi Bison 2 Pro | Oppo A3s |
| Operating System | Android v12 | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Octa core (2.2 GHz, Dual core, Cortex A75 2 GHz, Hexa Core, Cortex A55) | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | MediaTek Helio P90 | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| Architecture | 64 bit | |
| GPU | PowerVR GM9446 | Adreno 506 |
| Internal memory | 16 GB, 2 GB RAM | |
| RAM | 8 GB | |
| External memory | microSD, up to 256 GB (dedicated slot) | |
| RAM Type | LPDDR4X | |
| Display | Umidigi Bison 2 Pro | Oppo A3s |
| Size | 6.5 inches (16.51 cm) | 6.2" inc |
| Resolution | 1080 x 2400 pixels | 720 x 1520 px |
| Aspect Ratio | 20:9 | |
| Touchscreen | capacitive touchscreen | |
| Type | IPS LCD | IPS LCD |
| Screen-to-Body Ratio | 81.2% | |
| Pixel Density | 405 ppi | 271 PPI |
| Display area | 95.9 cm2 | |
| Touch Screen | Yes, Capacitive Touchscreen, Multi-touch | |
| Display aspect ratio | 19:9 (height:width) | |
| Bezel-less display | Yes with punch-hole display | |
| Colors | 16M | |
| Storage | Umidigi Bison 2 Pro | Oppo A3s |
| Internal Memory | 256 GB | |
| Expandable Memory | Yes, Up to 512 GB | |
| USB OTG | Yes | |
| Storage Type | UFS 2.1 | |
| Connectivity | Umidigi Bison 2 Pro | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 2100 | |
| 4G Network | LTE | |
| Network Support | 4G , 3G, 2G | |
| Network | GSM / HSPA / LTE | |
| Bluetooth | Yes, v5.0 | 4.2, A2DP, LE |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | |
| GPS | Yes with A-GPS, Glonass | Yes, with A-GPS |
| NFC | Yes | |
| Edge | Yes | |
| SIM Size | SIM1: Nano, SIM2: Nano (Hybrid) | |
| GPRS | Yes | |
| SIM Slot(s) | Dual SIM, GSM GSM, Dual VoLTE | |
| USB Connectivity | Mass storage device, USB charging | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps | |
| USB | microUSB 2.0, USB On-The-Go | |
| VoLTE | Yes | |
| Wi-Fi | Yes, Wi-Fi 802.11, a/ac/b/g/n | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Wi-Fi Features | Mobile Hotspot | |
| Camera | Umidigi Bison 2 Pro | 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 | |
| Main camera | Umidigi Bison 2 Pro | Oppo A3s |
| Resolution | 48 MP f/2.2, Primary Camera 16 MP f/2.2, Ultra-Wide Angle Camera 5 MP f/2.4, Macro Camera | |
| Image Resolution | 8000 x 6000 Pixels | |
| Camera Setup | Triple | |
| Flash | Yes, Dual LED Flash | |
| Camera Features | Digital Zoom Auto Flash Face detection Touch to focus | |
| Autofocus | Yes | |
| Settings | Exposure compensation, ISO control | |
| Shooting Modes | Continuos Shooting High Dynamic Range mode (HDR) | |
| Video Recording | 1920x1080 @ 30 fps 1280x720 @ 30 fps | |
| Selfie camera | Umidigi Bison 2 Pro | Oppo A3s |
| Resolution | 24 MP f/2.0, Primary Camera | |
| Camera Setup | Single | |
| Video Recording | 1920x1080 @ 30 fps 1280x720 @ 30 fps | |
| Multimedia | Umidigi Bison 2 Pro | Oppo A3s |
| 3.5 mm Jack | Yes | |
| Audio Jack | 3.5 mm | |
| Loudspeaker | Yes | |
| Radio | Yes, Wireless FM | FM radio |
| Other | Umidigi Bison 2 Pro | Oppo A3s |
| Release date | 2018, July | |
| Sensors | Accelerometer, proximity, compass | |
| Design | Umidigi Bison 2 Pro | Oppo A3s |
| Colors | Red, Dark Purple | |
| Dimensions | 156.2 x 75.6 x 8.2 mm | |
| Colours | Black | |
| Width | 83.8 mm | |
| Height | 172 mm | |
| Thickness | 12.9 mm | |
| Weight | 280 grams | 168 g |
| Waterproof | Yes, Water resistant, IP68, IP69K | |
| Ruggedness | Dust proof | |
| Battery | Umidigi Bison 2 Pro | Oppo A3s |
| Battery capacity | 4230 mAh, Non-removable Li-Ion | |
| Capacity | 6150 mAh | |
| Type | Li-Polymer | |
| Removable | No | |
| Quick Charging | Yes, Fast, 18W | |
| USB Type-C | Yes | |
| Wireless Charging | Yes | |
| Sensors | Umidigi Bison 2 Pro | Oppo A3s |
| Fingerprint Sensor | Yes | |
| Fingerprint Sensor Position | Side | |
| Other Sensors | Light sensor, Proximity sensor, Accelerometer, Barometer, Compass, Gyroscope |
