| Xiaomi Black Shark 3 |
Oppo A3s |
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| Hardware and OS | Xiaomi Black Shark 3 | Oppo A3s |
| Operating system | Android 10.0 | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Octa-core (1x2.84 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585) | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Qualcomm SM8250 Snapdragon 865 (7 nm ) | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Adreno 650 | Adreno 506 |
| Internal memory | 128GB 8GB RAM, 128GB 12GB RAM, 256GB 12GB RAM | 16 GB, 2 GB RAM |
| External memory | No | microSD, up to 256 GB (dedicated slot) |
| Display | Xiaomi Black Shark 3 | Oppo A3s |
| Type | AMOLED | IPS LCD |
| Size | 6.67" inc | 6.2" inc |
| Resolution | 1080 x 2400 px | 720 x 1520 px |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Screen-to-Body Ratio | 82.4% | 81.2% |
| Display area | 107.4 cm2 | 95.9 cm2 |
| Display aspect ratio | 20:9 (height:width) | 19:9 (height:width) |
| Pixel Density | 395 PPI | 271 PPI |
| Colors | 16M | 16M |
| Other | DCI-P3 -Always-on display -90Hz -270Hz touch-sensing -500 nits typ. brightness -HDR10 | |
| Connectivity | Xiaomi Black Shark 3 | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DO | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 20(800), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) | LTE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac/ax, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | GSM / CDMA / HSPA / EVDO / LTE / 5G | GSM / HSPA / LTE |
| 5G Network | 5G band 41(2500), 78(3500), 79(4700); SA/NSA | |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 5.0, A2DP, LE, aptX HD, aptX Adaptive | 4.2, A2DP, LE |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, QZSS, BDS | Yes, with A-GPS |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A; 5G | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | 2.0, Type-C 1.0 reversible connector | microUSB 2.0, USB On-The-Go |
| Camera | Xiaomi Black Shark 3 | Oppo A3s |
| Main camera | 64 MP, Triple | 13 MP, Dual |
| Specs | 64 MP, f/1.8, 26mm (wide), 1/1.72', 0.8µm, PDAF -13 MP, f/2.3, (ultrawide) -5 MP, f/2.2, (depth) | 13 MP, f/2.2, AF -2 MP, f/2.4, depth sensor |
| Features | LED flash, HDR, panorama | LED flash, HDR, panorama |
| Video | 2160p@30/60fps, 1080p@30/60/240fps, 720p@1920fps | 1080p@30fps |
| Selfie camera | 20 MP, Single | 8 MP, Single |
| Multimedia | Xiaomi Black Shark 3 | Oppo A3s |
| 3.5 mm Jack | Yes | Yes |
| Radio | No | FM radio |
| Design | Xiaomi Black Shark 3 | Oppo A3s |
| Colors | Lightning Black, Armor Gray, Star Silver | Red, Dark Purple |
| Dimensions | 168.7 x 77.3 x 10.4 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 222 g | 168 g |
| Body build | Glass front, aluminum back, aluminum frame | |
| Battery | Xiaomi Black Shark 3 | Oppo A3s |
| Battery capacity | 4720 mAh, Non-removable Li-Po | 4230 mAh, Non-removable Li-Ion |
| Other | Xiaomi Black Shark 3 | Oppo A3s |
| Release date | 2020, March 3 | 2018, July |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass | Accelerometer, proximity, compass |
