Compare phones
| Global Score | |
| 76.7 | 79 |
| Basic Information | |
| Xiaomi | Xiaomi |
| Android 11 | Android 11, 10 |
| 2021-05-27 | 2020-04-07 |
| 6.23 x 2.96 x 0.33 inches | 6.53 x 3.02 x 0.35 inches |
| 6.70 ounces | 7.37 ounces |
| Moonlight White, Neptune Blue and Space Black, | Aurora blue, Glacier white and Interstellar grey |
| Glass and Plastic | Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 249.00 |
| Display / Screen | |
| 6.3 inches | 6.7 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| IPS LCD | IPS LCD |
| 409 pixels per inch | 393 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8 |
| Performance | |
| MediaTek Helio G85 MT6769Z chipset | Qualcomm Snapdragon 720G SM7125 chipset |
| Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali G52 MC2 GPU | Adreno 618 GPU |
| 9.09 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.02 | 11.74 |
| Camera | |
| 48.00 MP + 13.00 MP | 48.00 MP + 16.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 11 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.6 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 5020mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 6.8 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.0 |
| GPS | GPS |
| Infra-red port | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
The Xiaomi Redmi Note 9S is slightly better than Xiaomi Redmi Note 8 2021, getting a global score of 79 against 76.7. The Xiaomi Redmi Note 9S construction is older, a little thicker and just a little heavier than Xiaomi Redmi Note 8 2021. Both of these devices include the same Android 11 operating system.
The Xiaomi Redmi Note 9S counts with a bit more powerful CPU than Xiaomi Redmi Note 8 2021. Both of them have a Octa-Core CPU and a 4 GB RAM. The Xiaomi Redmi Note 8 2021 has a little more vivid display than Xiaomi Redmi Note 9S, because although it has a little bit smaller screen and a little bit lower 1080 x 2340 resolution, it also counts with a just a bit better pixels quantity in each inch in the screen.
The Xiaomi Redmi Note 9S features a quite bigger storage capacity for applications and games than Xiaomi Redmi Note 8 2021, and although they both have the same internal storage, the Xiaomi Redmi Note 9S also has an external memory slot that allows a maximum of 512 GB. Xiaomi Redmi Note 9S features just a bit better camera than Xiaomi Redmi Note 8 2021, and although they both have a same size camera sensor, a back facing camera with a 48 MP resolution and a F1.8 diafragm aperture, the Xiaomi Redmi Note 9S also has a lot higher 3840x2160 (4K) video definition.
Xiaomi Redmi Note 9S counts with superior battery lifetime than Xiaomi Redmi Note 8 2021, because it has 5020mAh of battery capacity against 4000mAh.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.