Compare phones
| Global Score | |
| 75.2 | 76.7 |
| Basic Information | |
| Xiaomi | Xiaomi |
| Android 4.4.3 | Android 11 |
| 2014-07-22 | 2021-05-27 |
| 5.48 x 2.70 x 0.35 inches | 6.23 x 2.96 x 0.33 inches |
| 5.26 ounces | 6.70 ounces |
| Black and White | Moonlight White, Neptune Blue and Space Black, |
| -- | Glass and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 329.00 | -- |
| Display / Screen | |
| 5 inches | 6.3 inches |
| 1080 x 1920 pixels (Full HD) | 2340 x 1080 pixels |
| IPS LCD | IPS LCD |
| 441 pixels per inch | 409 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 9.1 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 801 8974-AC chipset | MediaTek Helio G85 MT6769Z chipset |
| Qualcomm Krait 400 (Quad-Core 2500 MHz) processor | Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| Adreno 330 (450 MHz) GPU | Mali G52 MC2 GPU |
| 9.36 | 9.09 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 128 GB) external memory slot |
| 7.7 | 10.02 |
| Camera | |
| 13.00 MP + 8.00 MP | 48.00 MP + 13.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 0.33 inches (1/3.06") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (60 fps) (Full HD) slow motion video | 1280 x 720 (120 fps) (HD) slow motion video |
| 9.79 | 11 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSUPA, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSPA |
| SIM | Nano SIM |
| 7 | 6.6 |
| Battery Life | |
| 3080mAh Li-Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.04 | 5.92 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.2 |
| GPS | GPS |
| Infra-red port | Infra-red port |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
Xiaomi Redmi Note 8 2021 is slightly better than Xiaomi Mi 4, having a 76.7 score against 75.2. Both phones we compare here work with Android OS (Operating System), but the Xiaomi Redmi Note 8 2021 has the older 11 version while Xiaomi Mi 4 has Android 4.4.3. The Xiaomi Redmi Note 8 2021 is a notably newer and a bit thinner phone than the Xiaomi Mi 4, although it is a lot heavier.
The Xiaomi Mi 4 features a more vivid display than Xiaomi Redmi Note 8 2021, because although it has a little worse resolution of 1920 x 1080 and a really smaller display, it also counts with a little more pixels per inch of display. The Xiaomi Mi 4 features a little faster processing unit than Xiaomi Redmi Note 8 2021, because although it has less RAM and a lower number of cores (but faster), it also counts with a GPU.
Xiaomi Redmi Note 8 2021 has a much better camera than Xiaomi Mi 4, and although they both have the same video definition, a same size aperture and the same 30 fps video frame rate, the Xiaomi Redmi Note 8 2021 also has a much more megapixels back facing camera and a way larger back camera sensor shooting much better quality videos and photos.
Xiaomi Redmi Note 8 2021 has a way bigger storage to store more games and applications than Xiaomi Mi 4, and although they both have the same internal memory, the Xiaomi Redmi Note 8 2021 also has a SD memory card expansion slot that supports a maximum of 128 GB. The Xiaomi Redmi Note 8 2021 counts with greater battery life than Xiaomi Mi 4, because it has 4000mAh of battery capacity against 3080mAh.
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