Compare phones
| Global Score | |
| 75.8 | 76.1 |
| Basic Information | |
| Samsung | |
| Android 9.0 Pie | Android 10 |
| 2019-10-16 | 2020-06-29 |
| 6.76 x 3.09 x 0.38 inches | 6.61 x 3.02 x 0.32 inches |
| 7.58 ounces | 6.81 ounces |
| Cyber shade | Black |
| Aluminum | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| $ 600.00 | $ 194.00 |
| Display / Screen | |
| 6.7 inches | 6.5 inches |
| 2340 x 1080 pixels | 1600 x 720 pixels |
| AMOLED | IPS LCD |
| 385 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 855+ SM8150-AC chipset | Mediatek Helio P35 chipset |
| Kryo 485, 64-bit, 7 nm (Octa-Core 2960 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 12 GB RAM | 3 GB RAM |
| Adreno 640 GPU | PowerVR GE8320 GPU |
| 9.81 | 9.27 |
| Storage | |
| 256 GB internal memory | 32 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 13.3 | 9.84 |
| Camera | |
| 48.00 MP + 16.00 MP | 16.00 MP + 13.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.33 inches (1/3.06") sensor |
| 7680 x 4320 (15 fps) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 3840 x 2160 (30 fps) (4K) slow motion video | -- |
| 11.88 | 9.35 |
| 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, Dual SIM | Nano SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Galaxy A21 is slightly better than the nubia Red Magic 3S, getting a overall score of 76.1 against 75.8. Both phones we are comparing include Android OS, but Galaxy A21 has the previous 10 version while nubia Red Magic 3S has Android 9.0 Pie version. Even when the Galaxy A21 and the nubia Red Magic 3S were released with only 9 months difference, the Galaxy A21 is somewhat thinner and somewhat lighter.
The nubia Red Magic 3S has a little faster CPU than Samsung Galaxy A21, and although they both have 8 cpu cores, the nubia Red Magic 3S also has 9 GB more RAM. The nubia Red Magic 3S features a sharper screen than Galaxy A21, because it has a higher pixel count in each inch in the screen, a much higher resolution of 1080 x 2340 pixels and a little bit bigger display.
The nubia Red Magic 3S features a way better camera than Galaxy A21, because it has a bigger diafragm aperture to capture better low light captures and video, a lot higher 7680x4320 video definition, a way more mega-pixels camera in the back and a way bigger back-facing camera sensor which provides a lot better photo and video quality.
The nubia Red Magic 3S has a way bigger memory to install applications and games or saving photos and videos than Galaxy A21, because although it has no external SD slot, it also counts with 256 GB internal storage. The nubia Red Magic 3S has longer battery performance than Galaxy A21, because it has a 25% larger battery size.
The Samsung Galaxy A21 not only is the best phones in our comparison, but it's also very cheap compared to the other ones.
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