Compare phones
| Global Score | |
| 76.1 | 98.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | Android 11 |
| 2020-06-29 | 2021-01-29 |
| 6.61 x 3.02 x 0.32 inches | 6.50 x 2.98 x 0.35 inches |
| 6.81 ounces | 8.04 ounces |
| Black | Phantom black and Silver |
| Plastic and Plastic | Aluminum and Glass (Corning Gorilla Glass Victus) |
| -- | Scratch-Resistant Glass |
| $ 194.00 | $ 966.00 |
| Display / Screen | |
| 6.5 inches | 6.8 inches |
| 1600 x 720 pixels | 3200 x 1440 pixels |
| IPS LCD | Dynamic AMOLED |
| 270 pixels per inch | 516 pixels per inch |
| -- | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.3 | 9.8 |
| Performance | |
| Mediatek Helio P35 chipset | Qualcomm Snapdragon 888 chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 3 GB RAM | 12 GB RAM |
| PowerVR GE8320 GPU | Adreno 660 GPU |
| 9.27 | 9.72 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 9.84 | 10.1 |
| Camera | |
| 16.00 MP + 13.00 MP | 108.00 MP + 40.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| -- | 24.00mm focal length |
| 0.33 inches (1/3.06") sensor | 0.75 inches (1/1.33") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (24 fps) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 9.35 | 13.75 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy S21 Ultra is a lot better than the Samsung Galaxy A21, with a score of 98.1 against 76.1. Galaxy S21 Ultra is an a bit thicker and somewhat heavier cellphone than the Samsung Galaxy A21. Both phones in this review work with Android OS (operating system), but Galaxy S21 Ultra has a newer 11 version while Samsung Galaxy A21 has Android 10, counting with some nice extra features and performance improvements.
Galaxy S21 Ultra has a bit better processing power than Galaxy A21, and although they both have 8 CPU cores, the Galaxy S21 Ultra also has a larger amount of RAM. The Galaxy S21 Ultra has an incredibly better looking display than Samsung Galaxy A21, because it has a quite bigger display, a much better resolution of 1440 x 3200 and a lot more pixels per display inch.
Galaxy S21 Ultra features just a bit more memory capacity for games and applications than Galaxy A21, because although it has no SD memory slot, it also counts with 128 GB internal memory capacity. Galaxy S21 Ultra has a much better camera than Galaxy A21, and although they both have a F1.8 diafragm aperture, the Galaxy S21 Ultra also has a camera in the back with way more megapixels, a much higher video resolution and a much bigger sensor.
Samsung Galaxy S21 Ultra features better battery performance than Samsung Galaxy A21, because it has a 25% bigger battery capacity.
Although Galaxy S21 Ultra is a better device, it costs a lot more than Galaxy A21, and it doesn't have such a good relation between it's price and quality as Galaxy A21. If you are trying to save a few dollars, you can get Galaxy A21, giving up some specs and features, but you'll get the most out of your savings.
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