| Hardware and OS | Xiaomi Redmi 9i | |
| Operating System | Android v10 (Q) | |
| Custom UI | MIUI | |
| Processor | Octa core, 2 GHz, Cortex A53 | |
| Chipset | MediaTek Helio G25 | |
| 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 | |
| Display | Xiaomi Redmi 9i | other phones |
| 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 9i | other phones |
| Resolution | 13 MP f/2.2 Primary Camera(1µm pixel size) | |
| 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 9i | other phones |
| Resolution | 5 MP f/2.2 Primary Camera(1.12µm pixel size) | |
| Flash | yes Screen flash | |
| Physical Aperture | F2.2 | |
| Connectivity | Xiaomi Redmi 9i | other phones |
| 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, a/b/g/n | |
| Wi-Fi Calling | yes | |
| Wi-Fi Features | Mobile Hotspot | |
| USB Connectivity | Mass storage device, USB charging, microUSB 2.0 | |
| Multimedia | Xiaomi Redmi 9i | other phones |
| Audio Jack | 3.5 mm | |
| Loudspeaker | yes | |
| Design | Xiaomi Redmi 9i | other phones |
| Height | 164.9 mm | |
| Width | 77.07 mm | |
| Thickness | 9 mm | |
| Weight | 194 grams Below | |
| Colours | Midnight Black, Sea Blue,Nature Green | |
| Waterproof | yes Splash proof | |
| Battery | Xiaomi Redmi 9i | other phones |
| Type | Li-Polymer | |
| Capacity | 5000 mAh | |
| User Replaceable | No | |
| USB Type-C | No | |
| USB OTG Support | yes | |
| Features | Xiaomi Redmi 9i | other phones |
| Fingerprint Sensor | No | |
| Other Sensors | Light sensor, Proximity sensor, Accelerometer, Compass | |
