Compare phones
| Global Score | |
| 83.3 | 91.8 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 11 |
| 2018-03-16 | 2021-01-29 |
| 5.81 x 2.70 x 0.33 inches | 5.97 x 2.80 x 0.31 inches |
| 5.75 ounces | 6.03 ounces |
| Burgundy red, Coral blue, Ice blue, Lilac purple, Midnight black, Sunrise gold and Titanium gray | Gray, Phantom pink, Violet and White |
| Aluminum and Glass (Corning Gorilla Glass 5) | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 158.00 | $ 722.00 |
| Display / Screen | |
| 5.8 inches | 6.2 inches |
| 2960 x 1440 pixels | 2400 x 1080 pixels |
| Super AMOLED | Dynamic AMOLED |
| 568 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.9 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 845 SDM845 chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Adreno 630 GPU | Adreno 660 GPU |
| 9.54 | 9.63 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 400 GB) external memory slot | No SD card slot |
| 11.34 | 10.1 |
| Camera | |
| 12.00 MP + 8.00 MP | 12.00 MP + 10.00 MP |
| f/1.50 aperture | f/1.80 aperture |
| -- | 26.00mm focal length |
| 0.39 inches (1/2.55") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 10.23 | 10.78 |
| 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 | |
| 3000mAh Li - Ion Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 4.96 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy S21 has a general score of 91.8, which is better than the Galaxy S9's 83.3 global score. Galaxy S21's construction is extremely newer and just a little bit thinner, but just a bit heavier than the Galaxy S9. Galaxy S21 features a slightly better looking display than Galaxy S9, because although it has a lot lower amount of pixels in each inch in the screen and a way worse resolution of 1080 x 2400px, it also counts with a little bit larger screen.
Galaxy S9 counts with a greater memory capacity for apps and games than Galaxy S21, because although it has only 64 GB internal memory, it also counts with a SD extension slot that admits a maximum of 400 GB. Galaxy S21 has a little better hardware performance than Samsung Galaxy S9, and although they both have a Octa-Core processor, the Galaxy S21 also has a higher amount of RAM memory.
The Galaxy S21 features a slightly better camera than Samsung Galaxy S9, because although it has a tinier diafragm aperture which is not recommended for low-light photos, and they both have a same resolution camera, the Galaxy S21 also counts with a lot bigger camera sensor providing a much higher image quality and a much better 7680x4320 video quality.
The Samsung Galaxy S21 counts with superior battery life than Galaxy S9, because it has a 33% larger battery size.
Although Galaxy S21 is a better device, it is way more expensive than Galaxy S9, and it doesn't have such a good price and quality relation as Galaxy S9. If you are trying to save some money, you can buy Galaxy S9, and give up a few features and specifications, but you'll get the most with your savings.
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