Compare phones
| Global Score | |
| 76.1 | 83.3 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | -- |
| 2020-06-29 | 2018-03-16 |
| 6.61 x 3.02 x 0.32 inches | 5.81 x 2.70 x 0.33 inches |
| 6.81 ounces | 5.75 ounces |
| Black | Burgundy red, Coral blue, Ice blue, Lilac purple, Midnight black, Sunrise gold and Titanium gray |
| Plastic and Plastic | Aluminum and Glass (Corning Gorilla Glass 5) |
| -- | Scratch-Resistant Glass |
| $ 194.00 | $ 158.00 |
| Display / Screen | |
| 6.5 inches | 5.8 inches |
| 1600 x 720 pixels | 2960 x 1440 pixels |
| IPS LCD | Super AMOLED |
| 270 pixels per inch | 568 pixels per inch |
| No touch screen | No touch screen |
| 7.3 | 8.9 |
| Performance | |
| Mediatek Helio P35 chipset | Qualcomm Snapdragon 845 SDM845 chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | Kryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| PowerVR GE8320 GPU | Adreno 630 GPU |
| 9.27 | 9.54 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 400 GB) external memory slot |
| 9.84 | 11.34 |
| Camera | |
| 16.00 MP + 13.00 MP | 12.00 MP + 8.00 MP |
| f/1.80 aperture | f/1.50 aperture |
| 0.33 inches (1/3.06") sensor | 0.39 inches (1/2.55") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 9.35 | 10.23 |
| 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 |
| 6.7 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 3000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 4.96 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| 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 S9 has a score of 83.3, which is a little bit better than the Galaxy A21's 76.1 overall score. The Galaxy S9 is a much older and just a little thicker cellphone than the Galaxy A21, but Samsung was able to build it lighter anyway. The Galaxy S9 features a much more vibrant display than Galaxy A21, because although it has a quite smaller screen, it also counts with a much better number of pixels per inch in the screen and a lot better resolution of 1440 x 2960.
The Samsung Galaxy S9 counts with a better storage to install games and applications than Galaxy A21, because although it has a SD memory card expansion slot that allows 112 GB smaller, it also counts with 64 GB internal storage. The Galaxy S9 has a bit superior processor than Galaxy A21, and although they both have a Octa-Core CPU, the Galaxy S9 also has more RAM memory.
Galaxy S9 counts with just a bit better camera than Galaxy A21, because although it has a much lower resolution camera in the back, it also counts with a larger camera sensor providing a better image quality, a bigger aperture for better low light images and a way better 3840x2160 video definition.
The Galaxy A21 features longer battery performance than Samsung Galaxy S9, because it has a 4000mAh battery capacity.
Galaxy S9 is not only the best devices of the ones in this comparison, but it's also very cheap compared to the other ones.
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