Compare phones
| Global Score | |
| 76.7 | 80.6 |
| Basic Information | |
| Xiaomi | Xiaomi |
| Android 11 | Android 14 |
| 2021-05-27 | 2024-10-29 |
| 6.23 x 2.96 x 0.33 inches | 6.00 x 2.80 x 0.32 inches |
| 6.70 ounces | 6.67 ounces |
| Moonlight White, Neptune Blue and Space Black, | -- |
| Glass and Plastic | Glass |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 6.3 inches | 6.4 inches |
| 2340 x 1080 pixels | 2670 x 1200 pixels |
| IPS LCD | OLED |
| 409 pixels per inch | 457 pixels per inch |
| -- | 3200 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 10.2 |
| Performance | |
| MediaTek Helio G85 MT6769Z chipset | Snapdragon 8 Elite SM8750-AB (3 nm) chipset |
| Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | processor |
| 4 GB RAM | 12 GB RAM |
| Mali G52 MC2 GPU | Adreno 830 GPU |
| 9.09 | 6.21 |
| Storage | |
| 64 GB internal memory | 256 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | No SD card slot |
| 10.02 | 13.3 |
| Camera | |
| 48.00 MP + 13.00 MP | 50.00 MP + 32.00 MP |
| f/1.80 aperture | f/1.60 aperture |
| -- | 23.00mm focal length |
| 0.5 inches (1/2") sensor | -- |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (30 fps) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 11 | 12.1 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSPA | 5G, 5G |
| Nano SIM | Nano SIM |
| 6.6 | 7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 5400mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 7.12 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.4 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass and Gyroscope |
Comparison review
The Xiaomi 15 is slightly better than Xiaomi Redmi Note 8 2021, having a global score of 80.6 against 76.7. Both devices in this review include Android OS (operating system), but Xiaomi 15 has the newer 14 version while Xiaomi Redmi Note 8 2021 has Android 11 version, so it provides a lot of extra features and enhanced performance. Xiaomi 15's design is a lot newer, a little lighter and just a bit thinner than Xiaomi Redmi Note 8 2021.
Xiaomi 15 has a much more vibrant screen than Xiaomi Redmi Note 8 2021, because it has a slightly higher resolution of 1200 x 2670 pixels, a bit bigger screen and a just a bit more pixels per inch of screen. The Xiaomi Redmi Note 8 2021 features a much powerful processing unit than Xiaomi 15, although it has 8 GB less RAM, they both have the same number of cores.
Xiaomi 15 takes better photos and videos than Xiaomi Redmi Note 8 2021, because it has a back camera with more megapixels, a bigger aperture and a way better video definition. The Xiaomi 15 has a much greater memory for games and applications than Xiaomi Redmi Note 8 2021, because although it has no slot for an SD memory card, it also counts with 192 GB more internal memory capacity.
Xiaomi 15 has a really longer battery lifetime than Xiaomi Redmi Note 8 2021, because it has a 35 percent greater battery size.
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