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Global Score
11.679.93
Basic Information
SamsungXiaomi
Android 11Android 10, 9.0 Pie, 8.0 Oreo
2021-01-292018-06-05
6.50 x 2.98 x 0.35 inches6.10 x 2.94 x 0.30 inches
8.04 ounces6.17 ounces
Phantom black and SilverBlack, Blue, Gold and White
Aluminum and Glass (Corning Gorilla Glass Victus)Glass (Corning Gorilla Glass 5)
Scratch-Resistant GlassScratch-Resistant Glass
$ 966.00--
Display / Screen
6.8 inches6.2 inches
3200 x 1440 pixels 2248 x 1080 pixels
Dynamic AMOLED AMOLED
516 pixels per inch402 pixels per inch
1500 cd/m2 brightness600 cd/m2 brightness
No touch screenNo touch screen
9.88.6
Performance
Qualcomm Snapdragon 888 chipsetQualcomm Snapdragon 845 SDM845 chipset
Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processorKryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor
12 GB RAM6 GB RAM
Adreno 660 GPUAdreno 630 GPU
9.729.63
Storage
128 GB internal memory256 GB internal memory
No SD card slotNo SD card slot
10.113.3
Camera
108.00 MP + 40.00 MP12.00 MP + 20.00 MP
f/1.80 aperturef/1.80 aperture
24.00mm focal length56.00mm focal length
0.75 inches (1/1.33") sensor0.39 inches (1/2.55") sensor
7680 x 4320 (24 fps) video resolution3840 x 2160 (30 fps) (4K) video resolution
1280 x 720 (960 fps) (HD) slow motion video1280 x 720 (960 fps) (HD) slow motion video
13.759.9
Networks
Wi-FiWi-Fi
Mobile HotspotMobile Hotspot
5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPALTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA
Nano SIMNano SIM, Dual SIM
10.76.7
Battery Life
5000mAh Li - Polymer Battery3400mAh Li - Polymer Battery
Non-Removable BatteryNon-Removable Battery
Wireless Charging--
4.964.08
Other Features
Bluetooth 5.1 Bluetooth 5.0
GPSGPS
NFCNFC
Fingerprint ID ScannerFingerprint ID Scanner
Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity SensorAccelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor
FM Radio--

Comparison review

The Galaxy S21 Ultra has an overall score of 11.67, which is much better than Xiaomi Mi 8's overall score of 9.93. These phones use Android OS (operating system), but the Galaxy S21 Ultra has 11 version while Xiaomi Mi 8 has Android 10 version, providing a couple additional features. The Galaxy S21 Ultra design is way newer, but noticeably heavier and thicker than Xiaomi Mi 8.

Galaxy S21 Ultra has just a little better processing power than Xiaomi Mi 8, and although they both have a Octa-Core CPU, the Galaxy S21 Ultra also has 6 GB more RAM. The Galaxy S21 Ultra counts with a much better screen than Xiaomi Mi 8, because it has a way brighter screen, a quite larger screen, a better resolution of 1440 x 3200px and a higher screen density.

Xiaomi Mi 8 counts with a very superior storage capacity to install games and applications than Galaxy S21 Ultra, because it has 128 GB more internal storage. Samsung Galaxy S21 Ultra takes way better pictures and videos than Xiaomi Mi 8, and although they both have the same aperture, the Samsung Galaxy S21 Ultra also has a way better video definition, a lot bigger sensor taking lot higher quality photographs and videos and a back facing camera with a much better resolution.

The Samsung Galaxy S21 Ultra counts with a superior battery performance than Xiaomi Mi 8, because it has a 5000mAh battery size against 3400mAh.