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Global Score
Basic Information
Android 11Android 11, 10, 9.0 Pie
6.50 x 2.98 x 0.35 inches6.24 x 2.94 x 0.31 inches
8.04 ounces5.96 ounces
Phantom black and SilverBlack,Deep blue and Red
Aluminum and Glass (Corning Gorilla Glass Victus)Plastic
Scratch-Resistant Glass--
$ 966.00$ 166.00
Display / Screen
6.8 inches6.4 inches
3200 x 1440 pixels 1560 x 720 pixels
516 pixels per inch268 pixels per inch
1500 cd/m2 brightness--
No touch screenNo touch screen
Qualcomm Snapdragon 888 chipsetSamsung Exynos 7884 chipset
Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processorARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor
Adreno 660 GPU Mali-G71 MP2 GPU
128 GB internal memory32 GB internal memory
No SD card slotmicroSDXC (up to 512 GB) external memory slot
108.00 MP + 40.00 MP13.00 MP + 8.00 MP
f/1.80 aperturef/1.90 aperture
24.00mm focal length27.00mm focal length
0.75 inches (1/1.33") sensor0.32 inches (1/3.1") sensor
7680 x 4320 (24 fps) video resolution1920 x 1080 (30 fps) (Full HD) video resolution
1280 x 720 (960 fps) (HD) slow motion video--
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
Battery Life
5000mAh Li - Polymer Battery4000mAh 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 Galaxy S21 Ultra has a score of 11.67, which is much better than Samsung Galaxy A20's 8.91 score. These devices work with the same Android 11 operating system. Although the Galaxy S21 Ultra is newer than the Samsung Galaxy A20, it's a lot heavier and thicker. The Samsung Galaxy S21 Ultra has a bit better CPU than Galaxy A20, and although they both have 8 cpu cores, the Samsung Galaxy S21 Ultra also has a greater amount of RAM memory.

The Galaxy S21 Ultra features a way better screen than Samsung Galaxy A20, because it has a lot better 1440 x 3200 resolution, a lot greater pixels amount per inch in the display and a little bigger display. The Galaxy S21 Ultra counts with a bit bigger memory for games and applications than Samsung Galaxy A20, because although it has no external SD slot, it also counts with 128 GB internal storage capacity.

The Galaxy A20's battery duration is very similar to the Galaxy S21 Ultra one, although the Galaxy A20 has 4000mAh of battery capacity. Samsung Galaxy S21 Ultra captures much better photographs and videos than Galaxy A20, because it has a bigger aperture for better low-light photography and videos, a way higher 7680x4320 video definition, a lot larger back-facing camera sensor taking more light and vivid colors and a camera in the back with a lot higher 108 MP resolution.

Although Samsung Galaxy S21 Ultra is a better device, it costs a lot more money than the Galaxy A20, and it doesn't have such a good price and quality relation as Galaxy A20. If you want to save some money, you can buy the Galaxy A20, and give up a couple features, but you will get the most out of your savings.