Compare phones
| Global Score | |
| 87.1 | 77.7 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 10 |
| 2018-08-24 | 2020-06-19 |
| 6.37 x 3.01 x 0.35 inches | 6.44 x 2.96 x 0.35 inches |
| 7.09 ounces | 6.77 ounces |
| Cloud silver, Lavender purple, Midnight black and Ocean blue | Black, Blue, Red and White |
| Aluminum and Glass (Corning Gorilla Glass 5) | -- |
| Scratch-Resistant Glass | -- |
| $ 457.00 | -- |
| Display / Screen | |
| 6.4 inches | 6.5 inches |
| 2960 x 1440 pixels | 1600 x 720 pixels |
| Super AMOLED | TFT |
| 514 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8.7 | 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 |
| 6 GB RAM | 3 GB RAM |
| Adreno 630 GPU | Mali-G76 GPU |
| 9.63 | 9.09 |
| Storage | |
| 128 GB internal memory | 32 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 14.14 | 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 | 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 | |
| 4000mAh Li - Ion Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.92 | 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 |
Comparison review
The Samsung Galaxy Note9 is much better than the Galaxy A21s, getting a score of 87.1 against 77.7. The Samsung Galaxy Note9 body has the same thickness than the Galaxy A21s, but it is just a little bit heavier. The Galaxy Note9 features an incredibly better display than Galaxy A21s, because although it has a quite smaller screen, it also counts with a much better pixels quantity per inch in the display and a lot better 1440 x 2960px resolution.
Galaxy Note9 features much more memory capacity for games and applications than Galaxy A21s, and although they both have a slot for an external memory card that admits a maximum of 512 GB, the Galaxy Note9 also has 128 GB internal memory. The Galaxy Note9 counts with a little faster processor than Galaxy A21s, and although they both have the same number of cores, the Galaxy Note9 also has a larger amount of RAM.
The Galaxy A21s counts with greater battery life than Galaxy Note9, because it has 5000mAh of battery capacity. The Galaxy A21s takes clearer photos and videos than Samsung Galaxy Note9, because although it has worse 30 fps video frame rate and a much smaller camera aperture which is not recommended for capturing photographs in low-light situations, and they both have the same 1920x1080 video definition, the Galaxy A21s also counts with a way bigger sensor providing a much higher image quality and a back camera with a way higher resolution.
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