Compare phones
| Global Score | |
| 81.4 | 76.7 |
| Basic Information | |
| Xiaomi | Xiaomi |
| Android 9.0 Pie | Android 11 |
| 2019-04-15 | 2021-05-27 |
| 5.81 x 2.78 x 0.29 inches | 6.23 x 2.96 x 0.33 inches |
| 5.47 ounces | 6.70 ounces |
| 16 777 216 | Moonlight White, Neptune Blue and Space Black, |
| -- | Glass and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6 inches | 6.3 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| AMOLED | IPS LCD |
| 430 pixels per inch | 409 pixels per inch |
| 600 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.7 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 712 SDM712 chipset | MediaTek Helio G85 MT6769Z chipset |
| Kryo 360, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Adreno 616 GPU | Mali G52 MC2 GPU |
| 9.36 | 9.09 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 128 GB) external memory slot |
| 10.1 | 10.02 |
| Camera | |
| 48.00 MP + 20.00 MP | 48.00 MP + 13.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1280 x 720 (120 fps) (HD) slow motion video |
| 11.66 | 11 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.3 | 6.6 |
| Battery Life | |
| 3070mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.04 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.2 |
| GPS | GPS |
| NFC | -- |
| 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 Mi 9 SE has a global score of 81.4, which is a little bit better than Xiaomi Redmi Note 8 2021's 76.7 general score. Both of these phones come with Android OS (operating system), but the Xiaomi Mi 9 SE has a newer 9.0 Pie version while Xiaomi Redmi Note 8 2021 has Android 11 version. Even though Xiaomi Mi 9 SE is extremely older than the Xiaomi Redmi Note 8 2021, it's design is thinner and lighter.
The Xiaomi Mi 9 SE features a bit better processing unit than Xiaomi Redmi Note 8 2021, and although they both have a Octa-Core CPU, the Xiaomi Mi 9 SE also has 2 GB more RAM. Xiaomi Mi 9 SE counts with just a bit better looking display than Xiaomi Redmi Note 8 2021, because although it has a bit smaller display, and they both have exactly the same resolution of 1080 x 2340, the Xiaomi Mi 9 SE also counts with a quite better pixels number in each display inch.
Xiaomi Mi 9 SE features a slightly bigger storage capacity for games and applications than Xiaomi Redmi Note 8 2021, because although it has no SD memory card expansion slot, it also counts with 128 GB internal storage capacity. The Xiaomi Mi 9 SE has a little bit better camera than Xiaomi Redmi Note 8 2021, and although they both have a same resolution camera, a same size back-facing camera sensor and the same camera aperture, the Xiaomi Mi 9 SE also has a way better video resolution.
The Xiaomi Redmi Note 8 2021 has better battery duration than Xiaomi Mi 9 SE, because it has a 4000mAh battery size.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.