| Hardware and OS | Huawei P20 | Oppo A3s |
| Operating system | Android 8.1 (Oreo), upgradable to Android 9.0 (Pie); EMUI 8.1 | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Octa-core (4x2.4 GHz Cortex-A73 & 4x1.8 GHz Cortex-A53) | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Hisilicon Kirin 970 (10 nm) | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Mali-G72 MP12 | Adreno 506 |
| Internal memory | 128 GB, 4 GB RAM | 16 GB, 2 GB RAM |
| External memory | No | microSD, up to 256 GB (dedicated slot) |
| Display | Huawei P20 | Oppo A3s |
| Type | LTPS IPS LCD | IPS LCD |
| Size | 5.8" inc | 6.2" inc |
| Resolution | 1080 x 2240 px | 720 x 1520 px |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Screen-to-Body Ratio | 80.4% | 81.2% |
| Display area | 84.9 cm2 | 95.9 cm2 |
| Display aspect ratio | 18.7:9 (height:width) | 19:9 (height:width) |
| Pixel Density | 429 PPI | 271 PPI |
| Colors | 16M | 16M |
| Connectivity | Huawei P20 | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE | LTE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | GSM / HSPA / LTE | GSM / HSPA / LTE |
| SIM card | Single SIM (Nano-SIM)Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 4.2, A2DP, LE, EDR, aptX HD | 4.2, A2DP, LE |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Yes, with A-GPS, GLONASS, GALILEO | Yes, with A-GPS |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (3CA) Cat16 1024/150 Mbps | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| NFC | Yes | |
| USB | 3.1, Type-C 1.0 reversible connector | microUSB 2.0, USB On-The-Go |
| Camera | Huawei P20 | Oppo A3s |
| Main camera | 12 MP, Dual | 13 MP, Dual |
| Specs | 12 MP, f/1.8, 27mm (wide), 1/2.3', 1.55µm, OIS, PDAF & laser AF
-20 MP B/W, f/1.6, 27mm (wide), 2x lossless zoom, PDAF | 13 MP, f/2.2, AF
-2 MP, f/2.4, depth sensor |
| Features | Leica optics, LED flash, HDR, panorama | LED flash, HDR, panorama |
| Video | 2160p@30fps, 1080p@60fps, 1080p@30fps (gyro-EIS), 720p@960fps | 1080p@30fps |
| Selfie camera | 24 MP, Single | 8 MP, Single |
| Multimedia | Huawei P20 | Oppo A3s |
| 3.5 mm Jack | No | Yes |
| Radio | No | FM radio |
| Design | Huawei P20 | Oppo A3s |
| Colors | Twilight, Black, Midnight Blue, Pink Gold | Red, Dark Purple |
| Dimensions | 149.1 x 70.8 x 7.7 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 165 g | 168 g |
| Body build | Front/back glass & aluminum frame | |
| Battery | Huawei P20 | Oppo A3s |
| Battery capacity | 3400 mAh, Non-removable Li-Po | 4230 mAh, Non-removable Li-Ion |
| Other | Huawei P20 | Oppo A3s |
| Release date | 2018, March | 2018, July |
| Sensors | Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, color spectrum | Accelerometer, proximity, compass |
