Compare phones
| Global Score | |
| 73.9 | 76.1 |
| Basic Information | |
| Oppo | Samsung |
| Android 10, 9.0 Pie | Android 10 |
| 2019-10-18 | 2020-06-29 |
| 6.30 x 2.93 x 0.37 inches | 6.61 x 3.02 x 0.32 inches |
| 6.67 ounces | 6.81 ounces |
| Luminous black, Ocean blue and Sunset pink | Black |
| Aluminum and Glass (Corning Gorilla Glass 5) | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| -- | $ 194.00 |
| Display / Screen | |
| 6.5 inches | 6.5 inches |
| 2400 x 1080 pixels | 1600 x 720 pixels |
| AMOLED | IPS LCD |
| 405 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 730G SM7150-AB chipset | Mediatek Helio P35 chipset |
| Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 8 GB RAM | 3 GB RAM |
| Adreno 618 GPU | PowerVR GE8320 GPU |
| 9.27 | 9.27 |
| Storage | |
| 256 GB internal memory | 32 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 17.34 | 9.84 |
| Camera | |
| 48.00 MP + 16.00 MP | 16.00 MP + 13.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 28.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.33 inches (1/3.06") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (60 fps) (Full HD) slow motion video | -- |
| 11.55 | 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 | Nano SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 4000mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 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, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Galaxy A21 is a bit better than OPPO Reno2, having a 76.1 score against 73.9. Although the Galaxy A21 and the OPPO Reno2 were only released with a few months difference, the Galaxy A21 construction is somewhat thinner but also a bit heavier. Both phones in this comparison review include the same Android 10 operating system, so you shouldn't perceive any difference regarding OS features.
Galaxy A21 has a processing unit that's just as good as the OPPO Reno2 one, and although the Galaxy A21 has a smaller amount of RAM memory, they both have the same number of cores. OPPO Reno2 has a better display than Galaxy A21, and although they both have a screen of the same size, the OPPO Reno2 also has a way better resolution of 1080 x 2400px and a greater pixel quantity in each inch in the display.
The OPPO Reno2 has a much better camera than Samsung Galaxy A21, because it has a much larger back-facing camera sensor shooting lot better quality photos and videos, a lot higher video definition, a larger aperture and a way more mega-pixels camera. The OPPO Reno2 counts with a very superior storage to install games and applications than Galaxy A21, and although they both have a slot for external memory cards that holds a maximum of 512 GB, the OPPO Reno2 also has 256 GB internal memory.
Galaxy A21 and OPPO Reno2 feature really similar batteries performance.
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