Compare phones
| Global Score | |
| 74.1 | 76.7 |
| Basic Information | |
| Xiaomi | Xiaomi |
| Android 7.0 Nougat, 6.0 Marshmallow | Android 11 |
| 2017-01-23 | 2021-05-27 |
| 5.94 x 2.99 x 0.33 inches | 6.23 x 2.96 x 0.33 inches |
| 5.82 ounces | 6.70 ounces |
| 16 777 216 | Moonlight White, Neptune Blue and Space Black, |
| Aluminum | Glass and Plastic |
| -- | Scratch-Resistant Glass |
| $ 190.00 | -- |
| Display / Screen | |
| 5.5 inches | 6.3 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| IPS LCD | IPS LCD |
| 401 pixels per inch | 409 pixels per inch |
| 450 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 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 |
| 4 GB RAM | 4 GB RAM |
| Adreno 506 GPU | Mali G52 MC2 GPU |
| 9.09 | 9.09 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | microSDXC (up to 128 GB) external memory slot |
| 10.02 | 10.02 |
| Camera | |
| 13.00 MP + 5.00 MP | 48.00 MP + 13.00 MP |
| f/2.00 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 | 1280 x 720 (120 fps) (HD) slow motion video |
| 9.02 | 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 - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6 | 5.92 |
| Other Features | |
| Bluetooth 4.1 | Bluetooth 5.2 |
| GPS | GPS |
| Infra-red port | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
Xiaomi Redmi Note 8 2021 is just a bit better than the Xiaomi Redmi Note 4, with a global score of 76.7 against 74.1. Both of these phones come with Android operating system, but the Xiaomi Redmi Note 8 2021 has 11 version and Xiaomi Redmi Note 4 has Android 7.0 Nougat version. Xiaomi Redmi Note 8 2021's body has the same thickness than Xiaomi Redmi Note 4, but it's heavier.
The Xiaomi Redmi Note 8 2021 and Xiaomi Redmi Note 4 count with similar processors, they have the same RAM amount and the same number of cores. The Xiaomi Redmi Note 4 counts with a little more vivid display than Xiaomi Redmi Note 8 2021, although it has a little less pixels per display inch, a quite lower resolution of 1080 x 1920px and a bit smaller screen.
The Xiaomi Redmi Note 8 2021 counts with a way better camera than Xiaomi Redmi Note 4, and although they both have the same video frame rate and the same (Full HD) video quality, the Xiaomi Redmi Note 8 2021 also has a back camera with lot more megapixels and a bigger aperture. The Xiaomi Redmi Note 8 2021's memory to install applications and games or saving photos and videos is very similar to Xiaomi Redmi Note 4's one, they have the same 64 GB internal storage and a slot for external memory cards that supports a maximum of 128 GB.
Xiaomi Redmi Note 4 counts with a bit better battery lifetime than Xiaomi Redmi Note 8 2021, because it has 4100mAh of battery capacity instead of 4000mAh.
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