| Brand | MI |
| Model | Redmi 9 Dual Camera Version |
| Launch Announcement | 2021 |
| NETWORKS | |
| Network Type | GSM / HSPA / LTE |
| 2G | GSM 850 / 900 / 1800 / 1900 |
| 3G | HSDPA |
| 4G | LTE |
| Speed | HSPA, LTE |
| GPRS | Yes |
| EDGE | Yes |
| SIM | Dual SIM |
| BODY | |
| Dimensions | 164.9 x 77.07 x 9.0 mm |
| Weight | 194 g |
| DISPLAY | |
| Type | Dot Drop Display |
| Size | 6.53 inches |
| Resolutions | 720 x 1600 pixels |
| Multi touch | Yes |
| Protection | Corning Gorilla Glass 3 |
| PLATFORM | |
| CPU | 12 nm process technology, up to 2.3GHz, 8x A53, Octa-core |
| Chipset | MediaTek Helio G35 (12 nm) |
| GPU | PowerVR8320, up to 680MHz |
| OS | Android 10 ,MIUI 12 |
| Storage | |
| RAM | 4GB |
| ROM | 64GB |
| Card Slot | microSD XC (dedicated slot) |
| CAMERA | |
| Back Camera | 13 MP, 2 MP |
| Features | AI Portrait Mode, Face Recognition, Screen Flash, HDR |
| Videos | 1080p@30fps |
| Front Camera | 5 MP |
| BATTERY | |
| Type | Non-removable Li-Po 6000 mAh battery |
| Charging | Fast charging 18W ,Reverse charging 9W |
| SOUND | |
| Audio | Yes |
| Loudspeaker | Yes |
| 3.5mm Jack | Yes |
| USB | Yes |
| WiFi | Yes |
| Bluetooth | 5.0 |
| GPS | Yes, with A-GPS |
| Sensors | Sensors Vibration Motor, Distance Sensor, Ambient Light Sensor, Accelerometer |