Compare phones
| Global Score | |
| 85.2 | 91.8 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 11 |
| 2018-11-15 | 2021-01-29 |
| 6.40 x 3.03 x 0.31 inches | 5.97 x 2.80 x 0.31 inches |
| 6.46 ounces | 6.03 ounces |
| Bubblegum pink, Caviar black and Lemonade blue | Gray, Phantom pink, Violet and White |
| Glass and Metal | Aluminum and Plastic |
| -- | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 6.3 inches | 6.2 inches |
| 2220 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | Dynamic AMOLED |
| 392 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 660 SDM660 chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 8 GB RAM |
| Adreno 512 GPU | Adreno 660 GPU |
| 9.27 | 9.63 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 14.14 | 10.1 |
| Camera | |
| 24.00 MP + 24.00 MP | 12.00 MP + 10.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 27.00mm focal length | 26.00mm focal length |
| 0.36 inches (1/2.8") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 10.45 | 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, Dual SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 3800mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.76 | 5.92 |
| 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
Samsung Galaxy S21 has a general score of 91.8, which is a little bit better than Samsung Galaxy A9 (2018)'s 85.2 global score. The Samsung Galaxy S21 is a a little bit lighter device than Samsung Galaxy A9 (2018), but both have the same thickness. Samsung Galaxy S21 counts with just a little better hardware performance than Galaxy A9 (2018), and although they both have 8 cpu cores, the Samsung Galaxy S21 also has a greater amount of RAM memory.
The Samsung Galaxy S21 features a much better looking display than Samsung Galaxy A9 (2018), because although it has a bit smaller display, it also counts with a little bit higher resolution of 1080 x 2400 and a just a bit more pixels per screen inch. Galaxy S21 has just a bit better camera than Galaxy A9 (2018), because although it has a smaller diafragm aperture which is not recommended for capturing pictures and/or video in low-light situations and a camera with a way lower 12 megapixels resolution, it also counts with a way larger back-facing camera sensor and a much better 7680x4320 video definition.
Samsung Galaxy A9 (2018) features a lot bigger memory capacity for games and applications than Galaxy S21, and although they both have exactly the same 128 GB internal storage capacity, the Samsung Galaxy A9 (2018) also has a SD card slot that holds a maximum of 512 GB. The Samsung Galaxy S21 counts with a little better battery lifetime than Samsung Galaxy A9 (2018), because it has a 5 percent bigger battery capacity.
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