Compare phones
| Global Score | |
| 90.7 | 76.7 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 14 | Android 11 |
| -- | 2021-05-27 |
| -- | 6.23 x 2.96 x 0.33 inches |
| -- | 6.70 ounces |
| -- | Moonlight White, Neptune Blue and Space Black, |
| Glass (Corning Gorilla Glass) and Titanium | Glass and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.8 inches | 6.3 inches |
| 3088 x 1440 pixels | 2340 x 1080 pixels |
| Dynamic AMOLED | IPS LCD |
| 501 pixels per inch | 409 pixels per inch |
| 2600 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 10.2 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 8 Gen 4 chipset | MediaTek Helio G85 MT6769Z chipset |
| processor | Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 12 GB RAM | 4 GB RAM |
| Yes GPU | Mali G52 MC2 GPU |
| 6.21 | 9.09 |
| Storage | |
| 256 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 128 GB) external memory slot |
| 13.3 | 10.02 |
| Camera | |
| 200.00 MP + 12.00 MP | 48.00 MP + 13.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 24.00mm focal length | -- |
| 0.77 inches (1/1.3") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (30 fps) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (120 fps) (HD) slow motion video |
| 14.74 | 11 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSPA |
| Nano SIM | Nano SIM |
| 10.6 | 6.6 |
| Battery Life | |
| 5000mAh Li - Ion Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.8 | 5.92 |
| Other Features | |
| Bluetooth 5.3 | Bluetooth 5.2 |
| GPS | GPS |
| NFC | -- |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
The Samsung Galaxy S25 Ultra has a general score of 90.7, which is much better than Xiaomi Redmi Note 8 2021's 76.7 general score. Both phones in our current comparison come with Android OS, but Samsung Galaxy S25 Ultra has a more recent 14 version and Xiaomi Redmi Note 8 2021 has Android 11 version, giving you some additional features. The Samsung Galaxy S25 Ultra design is way lighter and notably thinner than the Xiaomi Redmi Note 8 2021.
The Xiaomi Redmi Note 8 2021 has a way better performance than Galaxy S25 Ultra, although it has a lower amount of RAM, they both have 8 processing cores. Samsung Galaxy S25 Ultra counts with an incredibly better screen than Xiaomi Redmi Note 8 2021, because it has a quite larger screen, a just a little higher display density and a better 1440 x 3088 resolution.
Galaxy S25 Ultra takes greater videos and photos than Xiaomi Redmi Note 8 2021, because it has a lot better 7680x4320 video quality, a larger aperture to capture better low light photography and videos, a back camera with a much better resolution and a lot larger back-facing camera sensor taking much higher quality videos and photos.
The Samsung Galaxy S25 Ultra counts with much more storage capacity to store more games and applications than Xiaomi Redmi Note 8 2021, because although it has no slot for an external memory card, it also counts with 256 GB internal storage. Galaxy S25 Ultra features better battery performance than Xiaomi Redmi Note 8 2021, because it has a 5000mAh battery size instead of 4000mAh.
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