| Hardware and OS Realme X3 |
| Operating System: | Android v10 (Q) |
| Custom UI: | Realme UI |
| Processor: | Octa core (2.96 GHz, Single core, Kryo 485 2.42 GHz, Tri core, Kryo 485 1.8 GHz, Quad core, Kryo 485) |
| Chipset: | Qualcomm Snapdragon 855 Plus |
| Architecture: | 64 bit |
| RAM: | 6 GB |
| Internal Memory: | 128 GB |
| Expandable Memory: | No |
| Graphics: | Adreno 640 |
| SIM Slot(s): | Dual SIM, GSM GSM |
| Display Realme X3 |
| Screen Size: | 6.6 inches (16.76 cm) |
| Screen Resolution: | 1080 x 2400 pixels |
| Display Type: | IPS LCD |
| Pixel Density: | 399 ppi |
| Aspect Ratio: | 20:9 |
| Refresh Rate: | 120 Hz |
| Screen to Body Ratio: | 90.5 % |
| Screen Protection: | Corning Gorilla Glass v5 |
| Touch Screen: | yes Capacitive Touchscreen, Multi-touch |
| Main Camera Realme X3 |
| Image Resolution: | 9000 x 7000 Pixels |
| Flash: | yes LED Flash |
| Sensor: | ISOCELL Plus |
| Camera Features: | Digital Zoom, Auto Flash, Face detection, Touch to focus |
| Autofocus: | yes Phase Detection autofocus |
| Physical Aperture: | F1.8 |
| Video Recording: | 3840x2160 @ 30 fps, 1920x1080 @ 60 fps |
| Shooting Modes: | Continuos Shooting, High Dynamic Range mode (HDR) |
| Settings: | Exposure compensation, ISO control |
| Front Camera Realme X3 |
| Resolution: | 16 MP f/2.1, Wide Angle (105° field-of-view) Primary Camera(3" sensor size, 1µm pixel size)8 MP f/2.2, Wide Angle, Ultra-Wide Angle (105° field-of-view) Camera(4.0" sensor size, 1.12µm pixel size) |
| Sensor: | Exmor RS |
| Physical Aperture: | F2.1 |
| Video Recording: | 1920x1080 @ 30 fps, 1280x720 @ 30 fps |
| Connectivity Realme X3 |
| Network: | 4G: Available ,
3G: Available, 2G: Available |
| SIM Size: | SIM1: Nano, SIM2: Nano |
| Bluetooth: | yes v5.0 |
| GPS: | yes with A-GPS, Glonass |
| NFC: | No |
| VoLTE: | yes |
| Wi-Fi: | yes Wi-Fi 802.11, ac/b/g/n/n 5GHz, MIMO |
| Wi-Fi Features: | Mobile Hotspot |
| USB Connectivity: | Mass storage device, USB charging |
| Multimedia Realme X3 |
| Audio Features: | Dolby Atmos |
| Audio Jack: | USB Type-C |
| FM Radio: | No |
| Design Realme X3 |
| Height: | 163.8 mm |
| Width: | 75.8 mm |
| Thickness: | 8.9 mm |
| Weight: | 202 grams |
| Build Material: |
Back: Mineral Glass |
| Colours: | Glacier Blue, Arctic White |
| Battery Realme X3 |
| Type: | Li-ion |
| Capacity: | 4200 mAh |
| User Replaceable: | No |
| Quick Charging: | yes Super Dart, 30W: 100 % in 55 minutes |
| Quick Charging: | yes |
| USB Type-C: | yes |
| USB OTG Support: | yes |
| Features Realme X3 |
| Fingerprint Sensor: | yes |
| Fingerprint Sensor Position: | Side |
| Other Sensors: | Light sensor, Proximity sensor, Accelerometer, Gyroscope |
