Compare phones
| Global Score | |
| 71.7 | 76.7 |
| Basic Information | |
| Xiaomi | Xiaomi |
| Android 6.0 Marshmallow | Android 11 |
| 2016-11-07 | 2021-05-27 |
| 5.56 x 2.74 x 0.35 inches | 6.23 x 2.96 x 0.33 inches |
| 5.50 ounces | 6.70 ounces |
| 16 777 216 | Moonlight White, Neptune Blue and Space Black, |
| Metal | Glass and Plastic |
| -- | Scratch-Resistant Glass |
| $ 133.00 | -- |
| Display / Screen | |
| 5 inches | 6.3 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| IPS LCD | IPS LCD |
| 441 pixels per inch | 409 pixels per inch |
| No touch screen | No touch screen |
| 8.2 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 625 8953 chipset | MediaTek Helio G85 MT6769Z chipset |
| ARM Cortex-A53, 64-bit (Octa-Core 2000 MHz) processor | Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| Adreno 506 GPU | Mali G52 MC2 GPU |
| 9.09 | 9.09 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | microSDXC (up to 128 GB) external memory slot |
| 8.12 | 10.02 |
| Camera | |
| 13.00 MP + 5.00 MP | 48.00 MP + 13.00 MP |
| f/2.20 aperture | f/1.80 aperture |
| -- | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| -- | 1280 x 720 (120 fps) (HD) slow motion video |
| 8.8 | 11 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G) and HSPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSPA |
| Micro SIM | Nano SIM |
| 6.1 | 6.6 |
| Battery Life | |
| 4100mAh Li - Ion Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6 | 5.92 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.2 |
| GPS | GPS |
| -- | 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 |
| FM Radio | -- |
Comparison review
Xiaomi Redmi Note 8 2021 is slightly better than the Xiaomi Redmi 4 Prime, with a general score of 76.7 against 71.7. Both phones in this comparison come with Android OS, but the Xiaomi Redmi Note 8 2021 has an older 11 version and Xiaomi Redmi 4 Prime has Android 6.0 Marshmallow version. Xiaomi Redmi Note 8 2021's construction is a lot newer and just a bit thinner than the Xiaomi Redmi 4 Prime's, although it is somewhat heavier.
Xiaomi Redmi 4 Prime has a bit better display than Xiaomi Redmi Note 8 2021, because although it has a much smaller display and a little lower resolution of 1080 x 1920 pixels, it also counts with a little greater display density. The Xiaomi Redmi 4 Prime and the Xiaomi Redmi Note 8 2021 have really similar processors, and although the Xiaomi Redmi Note 8 2021 has a greater amount of RAM, they both have 8 CPU cores.
Xiaomi Redmi Note 8 2021 counts with a much better camera than Xiaomi Redmi 4 Prime, and although they both have the same video definition and the same video frame rates, the Xiaomi Redmi Note 8 2021 also has a back camera with way more mega pixels and a bigger aperture to take better low light photos.
The Xiaomi Redmi Note 8 2021 counts with a much greater storage for games and applications than Xiaomi Redmi 4 Prime, and although they both have a SD card slot that allows a maximum of 128 GB, the Xiaomi Redmi Note 8 2021 also has more internal memory. The Xiaomi Redmi 4 Prime counts with just a little better battery performance than Xiaomi Redmi Note 8 2021, because it has 4100mAh of battery capacity.
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