| Hardware and OS Xiaomi Redmi 9 |
| Operating System: | Android v10 (Q) |
| Custom UI: | MIUI |
| Processor: | Octa core, 2.3 GHz, Cortex A53 |
| Chipset: | MediaTek Helio G35 |
| Architecture: | 64 bit |
| RAM: | 4 GB |
| Internal Memory: | 64 GB |
| Expandable Memory: | yes Up to 512 GB |
| Graphics: | PowerVR GE8320 |
| SIM Slot(s): | Dual SIM, GSM GSM, Dual VoLTE |
| Display Xiaomi Redmi 9 |
| Screen Size: | 6.53 inches (16.59 cm) |
| Screen Resolution: | 720 x 1600 pixels |
| Display Type: | IPS LCD |
| Pixel Density: | 269 ppi |
| Aspect Ratio: | 20:9 |
| Touch Screen: | yes Capacitive Touchscreen, Multi-touch |
| Main Camera Xiaomi Redmi 9 |
| Resolution: | 13 MP f/2.2 Primary Camera 2 MP f/2.4, Depth Camera
|
| Image Resolution: | 4128 x 3096 Pixels |
| Flash: | yes LED Flash |
| Camera Features: | Digital Zoom, Auto Flash, Face detection, Touch to focus |
| Autofocus: | yes Phase Detection autofocus |
| Physical Aperture: | F2.2 |
| Video Recording: | 1920x1080 @ 30 fps, 1280x720 @ 30 fps |
| Shooting Modes: | Continuos Shooting, High Dynamic Range mode (HDR) |
| Settings: | Exposure compensation, ISO control |
| Front Camera Xiaomi Redmi 9 |
| Resolution: | 5 MP f/2.2 Primary Camera(1.12µm pixel size) |
| Flash: | yes Screen flash |
| Physical Aperture: | F2.2 |
| Video Recording: | 1920x1080 @ 30 fps, 1280x720 @ 30 fps |
| Connectivity Xiaomi Redmi 9 |
| Network: | 4G: Available , 3G: Available, 2G: Available |
| SIM Size: | SIM1: Nano, SIM2: Nano |
| Bluetooth: | yes v5.0 |
| GPS: | yes with A-GPS, Glonass |
| VoLTE: | yes |
| Wi-Fi: | yes Wi-Fi 802.11, ac/b/g/n/n 5GHz |
| Wi-Fi Features: | Wi-Fi Direct, Mobile Hotspot |
| USB Connectivity: | Mass storage device, USB charging, microUSB 2.0 |
| Multimedia Xiaomi Redmi 9 |
| Audio Jack: | 3.5 mm |
| FM Radio: | yes |
| Loudspeaker: | yes |
| Design Xiaomi Redmi 9 |
| Height: | 164.9 mm |
| Width: | 77 mm |
| Thickness: | 9 mm |
| Weight: | 194 grams Below |
| Build Material: | Back: Plastic |
| Colours: | Sporty Orange, Sky Blue, Carbon Black |
| Waterproof: | yes Splash proof |
| Battery Xiaomi Redmi 9 |
| Type: | Li-Polymer |
| Capacity: | 5000 mAh |
| User Replaceable: | No |
| USB Type-C: | No |
| Features Xiaomi Redmi 9 |
| Fingerprint Sensor: | yes |
| Fingerprint Sensor Position: | Rear |
| Other Sensors: | Light sensor, Proximity sensor, Accelerometer, Compass |