Compare phones
| Global Score | |
| 76.7 | 90.7 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11 | Android 14 |
| 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 | Glass (Corning Gorilla Glass) and Titanium |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.3 inches | 6.8 inches |
| 2340 x 1080 pixels | 3088 x 1440 pixels |
| IPS LCD | Dynamic AMOLED |
| 409 pixels per inch | 501 pixels per inch |
| -- | 2600 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 10.2 |
| Performance | |
| MediaTek Helio G85 MT6769Z chipset | Qualcomm Snapdragon 8 Gen 4 chipset |
| Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | processor |
| 4 GB RAM | 12 GB RAM |
| Mali G52 MC2 GPU | Yes 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 | 200.00 MP + 12.00 MP |
| f/1.80 aperture | f/1.70 aperture |
| -- | 24.00mm focal length |
| 0.5 inches (1/2") sensor | 0.77 inches (1/1.3") 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 (240 fps) (Full HD) slow motion video |
| 11 | 14.74 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | 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 | 10.6 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 5000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 6.8 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.3 |
| GPS | GPS |
| -- | NFC |
| 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
Samsung Galaxy S25 Ultra has an overall score of 90.7, which is much better than Xiaomi Redmi Note 8 2021's 76.7 overall score. Samsung Galaxy S25 Ultra is a noticeably lighter and noticeably thinner phone than Xiaomi Redmi Note 8 2021. Both phones in this comparison review work with Android OS (Operating System), but the Samsung Galaxy S25 Ultra has the newer 14 version and Xiaomi Redmi Note 8 2021 has Android 11, so it gives a couple nice extra features.
Samsung Galaxy S25 Ultra counts with a lot better looking screen than Xiaomi Redmi Note 8 2021, because it has a better 1440 x 3088 resolution, a quite larger display and a bit better display pixel density. Xiaomi Redmi Note 8 2021 features a way better hardware performance than Galaxy S25 Ultra, although it has a smaller amount of RAM, they both have the same number of cores.
Samsung Galaxy S25 Ultra shoots much better pictures and videos than Xiaomi Redmi Note 8 2021, because it has a lot higher 200 mega-pixels resolution camera, a way larger back-facing camera sensor shooting lot better quality photographs and videos, a bigger diafragm aperture to capture better low-light photography and a way higher 7680x4320 video quality.
Galaxy S25 Ultra features a much better storage to store more apps and games than Xiaomi Redmi Note 8 2021, because although it has no SD memory slot, it also counts with 256 GB internal storage. Galaxy S25 Ultra has longer battery lifetime than Xiaomi Redmi Note 8 2021, because it has 5000mAh of battery capacity instead of 4000mAh.
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