| Hardware and OS | Xiaomi Redmi 3x | Oppo A5s (AX5s) |
| Operating system | Android 6.0.1 (Marshmallow); MIUI 7.3 | Android 8.1 (Oreo); ColorOS 5.2 |
| Processor | Octa-core 1.4 GHz Cortex-A53 | Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) |
| Chipset | Qualcomm MSM8937 Snapdragon 430 (28 nm) | Mediatek MT6765 Helio P35 (12nm) |
| GPU | Adreno 505 | PowerVR GE8320 |
| Internal memory | 32 GB, 2 GB RAM | 32/64 GB, 2/3/4 GB RAM |
| External memory | microSD, up to 256 GB (uses SIM 2 slot) | microSD, up to 256 GB (dedicated slot) |
| Display | Xiaomi Redmi 3x | Oppo A5s (AX5s) |
| Type | IPS LCD | S-IPS LCD |
| Size | 5" inc | 6.2" inc |
| Resolution | 720 x 1280 px | 720 x 1520 px |
| Protection | | Corning Gorilla Glass 3 |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Screen-to-Body Ratio | 71.1% | 81.6% |
| Display area | 68.9 cm2 | 95.9 cm2 |
| Display aspect ratio | 16:9 (height:width) | 19:9 (height:width) |
| Pixel Density | 294 PPI | 271 PPI |
| Colors | 16M | 16M |
| Connectivity | Xiaomi Redmi 3x | Oppo A5s (AX5s) |
| 2G Network | GSM 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 / 1900 / 2100 |
| 4G Network | LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) | LTE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | GSM / CDMA / HSPA / EVDO / LTE | GSM / HSPA / LTE |
| SIM card | Hybrid Dual SIM (Micro-SIM/Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 4.1, A2DP | 4.2, A2DP, LE |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| Speed | HSPA, LTE, EV-DO Rev.A 3.1 Mbps | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | microUSB 2.0 | microUSB 2.0, USB On-The-Go |
| Camera | Xiaomi Redmi 3x | Oppo A5s (AX5s) |
| Main camera | 13 MP, Single | 13 MP, Dual |
| Specs | 13 MP, PDAF, f/2.0 | 13 MP, f/2.2, AF
-2 MP, f/2.4, depth sensor |
| Features | LED flash, HDR, panorama | LED flash, HDR, panorama |
| Video | 1080p@30fps | 1080p@30fps |
| Selfie camera | 5 MP, Single | 8 MP, Single |
| Multimedia | Xiaomi Redmi 3x | Oppo A5s (AX5s) |
| 3.5 mm Jack | Yes | Yes |
| Radio | FM radio | FM radio |
| Design | Xiaomi Redmi 3x | Oppo A5s (AX5s) |
| Colors | Gold, Dark Gray, Silver | Red, Black, Gold, Green |
| Body build | Aluminum body, plastic ends | |
| Dimensions | 139.3 x 69.6 x 8.5 mm | 155.9 x 75.4 x 8.2 mm |
| Weight | 144 g | 170 g |
| Battery | Xiaomi Redmi 3x | Oppo A5s (AX5s) |
| Battery capacity | 4100 mAh, Non-removable Li-Ion | 4230 mAh, Non-removable Li-Ion |
| Other | Xiaomi Redmi 3x | Oppo A5s (AX5s) |
| Release date | 2016, June | 2019, March |
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass , Infrared port | Fingerprint (rear-mounted), accelerometer, proximity, compass |
