Compare phones
| Global Score | |
| 76.7 | 80.1 |
| Basic Information | |
| Xiaomi | Xiaomi |
| Android 11 | Android 15 |
| 2021-05-27 | -- |
| 6.23 x 2.96 x 0.33 inches | -- |
| 6.70 ounces | -- |
| Moonlight White, Neptune Blue and Space Black, | -- |
| Glass and Plastic | -- |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 6.3 inches | 6.7 inches |
| 2340 x 1080 pixels | -- |
| IPS LCD | AMOLED |
| 409 pixels per inch | -- |
| -- | 3000 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 5 |
| Performance | |
| MediaTek Helio G85 MT6769Z chipset | Qualcomm Snapdragon 8 Elite SM8750-AB (4 nm) chipset |
| Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | processor |
| 4 GB RAM | 16 GB RAM |
| Mali G52 MC2 GPU | Adreno 830 GPU |
| 9.09 | 6.3 |
| Storage | |
| 64 GB internal memory | 512 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | No SD card slot |
| 10.02 | 17.6 |
| Camera | |
| 48.00 MP + 13.00 MP | 200.00 MP + 32.00 MP |
| f/1.80 aperture | -- |
| 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 (1920 fps) (Full HD) slow motion video |
| 11 | 12.87 |
| Networks | |
| Wi-Fi | -- |
| Mobile Hotspot | -- |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA |
| Nano SIM | Nano SIM |
| 6.6 | 7.6 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 6000mAh Si - Carbon Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 7.52 |
| 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, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
Xiaomi 15 Ultra (Rumored) is slightly better than the Xiaomi Redmi Note 8 2021, getting a score of 80.1 against 76.7. Xiaomi 15 Ultra (Rumored) is a extremely lighter and much thinner cellphone than Xiaomi Redmi Note 8 2021. Both of these phones have Android OS (Operating System), but Xiaomi 15 Ultra (Rumored) has the newer 15 version while Xiaomi Redmi Note 8 2021 has Android 11 version.
Xiaomi Redmi Note 8 2021 has a really superior performance than Xiaomi 15 Ultra (Rumored), although it has lesser RAM memory, they both have a Octa-Core CPU. The Xiaomi Redmi Note 8 2021 features a much sharper screen than Xiaomi 15 Ultra (Rumored), although it has a quite smaller screen. The Xiaomi 15 Ultra (Rumored) takes much better pictures and videos than Xiaomi Redmi Note 8 2021, because it has a lot more MP camera and a much higher video resolution.
Xiaomi 15 Ultra (Rumored) counts with much more storage to install applications and games than Xiaomi Redmi Note 8 2021, because although it has no SD memory card expansion slot, it also counts with more internal memory. Xiaomi 15 Ultra (Rumored) has a much better battery life than Xiaomi Redmi Note 8 2021, because it has a 50 percent larger battery capacity.
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