| Hardware and OS | Oppo Realme X | |
| Operating system | Android 9.0 (Pie); ColorOS 6 | |
| Processor | Octa-core (2x2.2 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver) | |
| Chipset | Qualcomm SDM710 Snapdragon 710 (10 nm) | |
| GPU | Adreno 616 | |
| Internal memory | 128/256 GB, 8 GB RAM64 GB, 4/6 GB RAM | |
| External memory | No | |
| Display | Oppo Realme X | other phones |
| Type | AMOLED | |
| Size | 6.53" inc | |
| Resolution | 1080 x 2340 px | |
| Protection | Corning Gorilla Glass 5 | |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | 85.9% | |
| Display area | 105.2 cm2 | |
| Display aspect ratio | 19.5:9 (height:width) | |
| Pixel Density | 394 PPI | |
| Colors | 16M | |
| Connectivity | Oppo Realme X | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 1700(AWS) / 2100 | |
| 4G Network | LTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot | |
| Network | GSM / CDMA / HSPA / LTE | |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | |
| Bluetooth | 5.0, A2DP, LE, aptX HD | |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS, GLONASS, BDS | |
| Speed | HSPA 42.2/11.5 Mbps, LTE-A (2CA) Cat6 300/75 Mbps | |
| USB | Type-C 1.0 reversible connector | |
| Camera | Oppo Realme X | other phones |
| Main camera | 48 MP, Dual | |
| Specs | 48 MP, f/1.7, (wide), 26mm (wide), 1/2', 0.8µm, PDAF -5 MP, f/2.4, depth sensor | |
| Features | LED flash, HDR | |
| Video | 2160p@30fps, 1080p@30fps (gyro-EIS), 1080p@120fps, 720p@960fps | |
| Selfie camera | 16 MP, Single | |
| Multimedia | Oppo Realme X | other phones |
| 3.5 mm Jack | Yes | |
| Radio | FM radio | |
| Design | Oppo Realme X | other phones |
| Colors | Steam white, Punk Blue | |
| Body build | Front glass (Gorilla Glass 5), plastic body | |
| Dimensions | 161.2 x 76 x 9.4 mm | |
| Weight | 191 g | |
| Battery | Oppo Realme X | other phones |
| Battery capacity | 3765 mAh, Non-removable Li-Po | |
| Other | Oppo Realme X | other phones |
| Release date | 2019, May | |
| Sensors | Fingerprint (under display), accelerometer, gyro, proximity, compass | |