Compare phones
| Global Score | |
| 83.3 | 77.7 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 10 |
| 2018-03-16 | 2020-06-19 |
| 5.81 x 2.70 x 0.33 inches | 6.44 x 2.96 x 0.35 inches |
| 5.75 ounces | 6.77 ounces |
| Burgundy red, Coral blue, Ice blue, Lilac purple, Midnight black, Sunrise gold and Titanium gray | Black, Blue, Red and White |
| Aluminum and Glass (Corning Gorilla Glass 5) | -- |
| Scratch-Resistant Glass | -- |
| $ 158.00 | -- |
| Display / Screen | |
| 5.8 inches | 6.5 inches |
| 2960 x 1440 pixels | 1600 x 720 pixels |
| Super AMOLED | TFT |
| 568 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8.9 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 845 SDM845 chipset | Samsung Exynos 850 chipset |
| Kryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 4 GB RAM | 3 GB RAM |
| Adreno 630 GPU | Mali-G76 GPU |
| 9.54 | 9.09 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 400 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.34 | 9.84 |
| Camera | |
| 12.00 MP + 8.00 MP | 48.00 MP + 13.00 MP |
| f/1.50 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.39 inches (1/2.55") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 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 | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 3000mAh Li - Ion Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 4.96 | 6.8 |
| 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, Gyroscope and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Samsung Galaxy S9 is a bit better than the Galaxy A21s, with a score of 83.3 against 77.7. Even though Samsung Galaxy S9 is older than Galaxy A21s, it's body is lighter and a bit thinner. The Samsung Galaxy S9 has a bit faster CPU than Samsung Galaxy A21s, and although they both have a Octa-Core CPU, the Samsung Galaxy S9 also has a greater amount of RAM memory.
The Samsung Galaxy S9 counts with a much better screen than Samsung Galaxy A21s, because although it has a quite smaller display, it also counts with a much higher 1440 x 2960 resolution and a way higher display pixels density. Samsung Galaxy S9 counts with a bigger storage for games and applications than Galaxy A21s, because although it has an external memory card slot that holds up to 400 GB against 512 GB, it also counts with 32 GB more internal storage capacity.
The Galaxy A21s has a really longer battery lifetime than Samsung Galaxy S9, because it has a 67 percent larger battery capacity. The Galaxy A21s takes clearer videos and photos than Samsung Galaxy S9, because although it has slower video frame rate and a lot smaller diafragm aperture which is not so good for capturing photographs or videos in low-light situations, and they both have the same video resolution, the Galaxy A21s also counts with a back camera with lot more MP and a way bigger camera sensor capturing more light and vivid colors.
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