| Hardware and OS | Xiaomi Mi 9X | |
| Operating system | Android 9.0 (Pie); MIUI 10 | |
| Processor | Octa-core (2x2.0 GHz Kryo 460 Gold & 6x1.7 GHz Kryo 460 Silver) | |
| GPU | Adreno 612 | |
| RAM | 6GB | |
| Internal Storage | 64 GB | |
| Memory Card Slot | microSD, microSDHC, microSDXC | |
| User Interface | Yes | |
| Display | Xiaomi Mi 9X | other phones |
| Type | Super AMOLED | |
| Size | 6.39 inches, 100.2 cm2 | |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio | |
| Colors | 16 Millions Colors | |
| Pixel Density | ~403 ppi density | |
| Touchscreen | Yes | |
| Protection | Yes Corning Gorilla Glass 6 | |
| Features | Fingerprint, accelerometer, gyro, proximity, compass | |
| Connectivity | Xiaomi Mi 9X | other phones |
| 4G Network | Yes | |
| Wi-Fi | a, b, g, n, n 5GHz, ac, Dual band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display | |
| GPS | A-GPS, GPS (L1 L5), GLONASS (L1), BeiDou (B1), Galileo (E1 E5a) | |
| NFC | No | |
| USB | 2.0, USB Type-C | |
| Speed | LTE 850 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz LTE-TDD 1900 MHz (B39) LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) LTE 700 MHz (B12) | |
| SIM | Nano SIM | |
| Dual SIM | Nano-SIM, Nano-SIM / microSD | |
| Wireless Charging | No | |
| Camera | Xiaomi Mi 9X | other phones |
| Main camera | 48 MP, f/1.8, 27mm (wide), 1/2", 0.8??m, PDAF | |
| Features | Dual-LED flash, HDR, panorama | |
| Image | 5000 x 3000 Pixels | |
| Selfie camera | 32 MP, f/2.0 | |
| Multimedia | Xiaomi Mi 9X | other phones |
| 3.5 mm Jack | yes | |
| Design | Xiaomi Mi 9X | other phones |
| Waterproof | No | |
| Battery | Xiaomi Mi 9X | other phones |
| Capacity | 3300 mAh Lithium-Polymer | |
| Placement | Non-Removable | |
| Other | Xiaomi Mi 9X | other phones |
| Sensors | Accelerometer, Ambient Light Sensor, E Compass, Fingerprint Scanner, Gyroscope, Hall Sensor, In-display fingerprint sensor, Proximity | |
