| Hardware and OS | Xiaomi Mi Max 4 Pro | Oppo A3s |
| Operating system | Android 9.0 (Pie), MIUI 11 | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Octa-core (2x2.0 GHz Kryo 460 Gold & 6x1.7 GHz Kryo 460 Silver) | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Qualcomm SDM675 Snapdragon 675 (11 nm) | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Adreno 612 | Adreno 506 |
| Internal memory | 64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM | 16 GB, 2 GB RAM |
| External memory | microSDXC (uses shared SIM slot) | microSD, up to 256 GB (dedicated slot) |
| Display | Xiaomi Mi Max 4 Pro | Oppo A3s |
| Type | IPS LCD | IPS LCD |
| Size | 7.2 inches, 128.3 cm2 | 6.2" inc |
| Resolution | 1080 x 2310 pixels | 720 x 1520 px |
| Touchscreen | | capacitive touchscreen |
| Protection | Corning Gorilla Glass 5 | |
| Screen-to-Body Ratio | | 81.2% |
| Display area | | 95.9 cm2 |
| Display aspect ratio | | 19:9 (height:width) |
| Pixel Density | | 271 PPI |
| Colors | | 16M |
| Main Camera | Xiaomi Mi Max 4 Pro | Oppo A3s |
| Camera | 48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF
20 MP | |
| Features | Dual-LED flash, HDR, panorama | |
| Video | 4K@30fps, 720p/1080p@30fps (gyro-EIS), 960fps | |
| Selfie camera | Xiaomi Mi Max 4 Pro | Oppo A3s |
| Camera | 8 MP, f/2.0, 1/4", 1.12µm | |
| Features | HDR | |
| Video | 1080p@30fps | |
| Connectivity | Xiaomi Mi Max 4 Pro | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | 1, 3, 4, 5, 7, 8, 20, 34, 38, 39, 40, 41 | LTE |
| Wi-Fi | | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | | GSM / HSPA / LTE |
| SIM card | | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 5.0, A2DP, LE | 4.2, A2DP, LE |
| Edge | | Yes |
| CDMA | CDMA 800 & TD-SCDMA | |
| GPRS | | Yes |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS |
| Speed | HSPA 42.2/5.76 Mbps, LTE | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| Infrared port | Yes | |
| USB | USB Type-C | microUSB 2.0, USB On-The-Go |
| NFC | No | |
| Technology | GSM / CDMA / HSPA / EVDO / LTE | |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot | |
| Camera | Xiaomi Mi Max 4 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 |
| Multimedia | Xiaomi Mi Max 4 Pro | Oppo A3s |
| Loudspeaker | Yes, with stereo speakers | |
| 3.5 mm Jack | Yes | Yes |
| Radio | No | FM radio |
| Design | Xiaomi Mi Max 4 Pro | Oppo A3s |
| Colors | Black, Champagne Gold, Blue | Red, Dark Purple |
| Dimensions | - | 156.2 x 75.6 x 8.2 mm |
| Body build | Glass front (Gorilla Glass 5), aluminum back, aluminum frame | |
| Weight | - | 168 g |
| SIM | Hybrid Dual SIM (Nano-SIM, dual stand-by) | |
| Battery | Xiaomi Mi Max 4 Pro | Oppo A3s |
| Type | Li-Po 5800 mAh, non-removable | |
| Charging | Fast charging 18W | |
| Battery capacity | | 4230 mAh, Non-removable Li-Ion |
| Other | Xiaomi Mi Max 4 Pro | Oppo A3s |
| Release date | | 2018, July |
| Sensors | | Accelerometer, proximity, compass |
| Features | Xiaomi Mi Max 4 Pro | Oppo A3s |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass | |
