| Xiaomi Redmi Note 9 | Xiaomi Redmi Note 9S | Xiaomi Redmi Note 9 Pro | |
| Specifications | |||
| Brand | Xiaomi | Xiaomi | Xiaomi | 
| Model | - | - | - | 
| Release Date | April 2020 | April 2020 | May 2020 | 
| Operating System | MIUI (Android 10) | MIUI (Android 10) | MIUI (Android 10) | 
| Dimensions | |||
| Size | 162.3 x 77.2 x 8.9 mm 6.39 x 3.04 x 0.35 in | 165.8 x 76.7 x 8.8 mm 6.53 x 3.02 x 0.35 in | 165.8 x 76.7 x 8.8 mm 6.53 x 3.02 x 0.35 in | 
| Weight | 199 g 7.02 oz | 209 g 7.37 oz | 209 g 7.37 oz | 
| Screen | |||
| Size | 6.53 inches | 6.67 inches | 6.67 inches | 
| Resolution | 1,080 x 2,340 pixels | 1,080 x 2,400 pixels | 1,080 x 2,400 pixels | 
| PPI | 395 | 395 | 395 | 
| Features | - | - | - | 
| Cameras | |||
| Rear | Quad camera 48 MP f/1.8 Wide 8 MP f/2.2 Ultra Wide 2 MP f/2.4 Macro 2 MP f/2.4 Depth | Quad camera 48 MP f/1.8 Wide 8 MP f/2.2 Ultra Wide 5 MP f/2.4 Macro 2 MP f/2.4 Depth | Quad camera 64 MP f/1.9 Wide 8 MP f/2.2 Ultra Wide 5 MP f/2.4 Macro 2 MP f/2.4 Depth | 
| Front | 13 MP f/2.3 Standard | 16 MP f/2.5 Wide | 16 MP f/2.5 Wide | 
| Storage | |||
| Memory | 3 GB 4 GB 6 GB | 4 GB 6 GB | 6 GB 8 GB | 
| Fixed | 64 GB 128 GB | 64 GB 128 GB | 64 GB 128 GB | 
| Removable | microSDXC | microSDXC | microSDXC | 
| Processor | |||
| Chip | MediaTek Helio G85 Octa-core processor 12 nm | Qualcomm Snapdragon 720G SM7125 Octa-core processor 8 nm | Qualcomm Snapdragon 720G SM7125 Octa-core processor 8 nm | 
| CPU | 2x 2.00 GHz Cortex-A75 6x 1.80 GHz Cortex-A55 | 2x 2.30 GHz Kryo 465 Gold 6x 1.80 GHz Kryo 465 Silver | 2x 2.30 GHz Kryo 465 Gold 6x 1.80 GHz Kryo 465 Silver | 
| GPU | Mali-G52 MC2 | Adreno 618 | Adreno 618 | 
| Battery | |||
| Capacity | 5,020 mAh | 5,020 mAh | 5,020 mAh | 
| Features | Fast charging 18W | Fast charging 18W | Fast charging 30W | 
| Removable | |||
| Connectivity | |||
| 5G | |||
| NFC | |||
| 3.5 mm Audio Jack | |||
| Micro USB | |||
| USB Type-C | |||
| Lightning | |||
|   |   |   | 
| 
                    Xiaomi Redmi Note 9 | 
                    Xiaomi Redmi Note 9S | 
                    Xiaomi Redmi Note 9 Pro | 
| 
                    6.53" | 
                    6.67" | 
                    6.67" |