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Global Score
Basic Information
Android 11Android 11
6.50 x 2.98 x 0.35 inches6.45 x 3.01 x 0.41 inches
8.04 ounces7.41 ounces
Phantom black and SilverMirror Black and Pale Grey
Aluminum and Glass (Corning Gorilla Glass Victus)Metal and Plastic
Scratch-Resistant Glass--
$ 966.00$ 499.00
Display / Screen
6.8 inches6.7 inches
3200 x 1440 pixels 2400 x 1080 pixels
Dynamic AMOLED --
516 pixels per inch393 pixels per inch
1500 cd/m2 brightness1300 cd/m2 brightness
No touch screenNo touch screen
Qualcomm Snapdragon 888 chipsetQualcomm Snapdragon 870 SM8250-AC chipset
Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processorKryo 585, 64-bit, 7 nm (Octa-Core 3200 MHz) processor
Adreno 660 GPUAdreno 650 GPU
128 GB internal memory128 GB internal memory
No SD card slotNo SD card slot
108.00 MP + 40.00 MP48.00 MP + 20.00 MP
f/1.80 aperturef/1.80 aperture
24.00mm focal length--
0.75 inches (1/1.33") sensor0.5 inches (1/2") sensor
7680 x 4320 (24 fps) video resolution3840 x 2160 (60 fps) (4K) video resolution
1280 x 720 (960 fps) (HD) slow motion video1280 x 720 (960 fps) (HD) slow motion video
Mobile HotspotMobile Hotspot
5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA
Nano SIMDual SIM
Battery Life
5000mAh Li - Polymer Battery4500mAh Li - Polymer Battery
Non-Removable BatteryNon-Removable Battery
Wireless Charging--
Other Features
Bluetooth 5.1 Bluetooth 5.0
Fingerprint ID ScannerFingerprint ID Scanner
Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity SensorAccelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor
FM Radio--

Comparison review

The Samsung Galaxy S21 Ultra is much better than the Xiaomi Black Shark 4, having a 11.67 score against 10.49. These phones have the same Android 11 operating system, so they should offer very similar operating system features. Even though Samsung Galaxy S21 Ultra and the Xiaomi Black Shark 4 were released only a few months apart, the Samsung Galaxy S21 Ultra design is just a little bit heavier but thinner than the Xiaomi Black Shark 4.

The Xiaomi Black Shark 4 features a bit better hardware performance than Galaxy S21 Ultra, although it has a smaller amount of RAM, they both have the same number of cores. Galaxy S21 Ultra counts with a little more vivid screen than Xiaomi Black Shark 4, because it has a bit bigger display, a bit brighter screen, a better 1440 x 3200 pixels resolution and a greater number of pixels per inch of screen.

Galaxy S21 Ultra captures much better pictures and videos than Xiaomi Black Shark 4, and although they both have a F1.8 aperture, the Galaxy S21 Ultra also has a lot better video quality, a lot bigger sensor and a back camera with a way higher resolution. Xiaomi Black Shark 4's memory capacity to store more apps and games is just as good as the Galaxy S21 Ultra one, both of them have exactly the same 128 GB internal memory capacity.

The Galaxy S21 Ultra counts with superior battery life than Xiaomi Black Shark 4, because it has an 11 percent larger battery size.

Although Galaxy S21 Ultra is a better device, it costs a lot more than the Xiaomi Black Shark 4, and it doesn't have such a good quality/price relation as the Xiaomi Black Shark 4. If you are trying to save some money, you can buy the Xiaomi Black Shark 4, giving up a few specs and features, but you'll get the most with your budget.