Compare phones
| Global Score | |
| 72.8 | 76.1 |
| Basic Information | |
| Oppo | Samsung |
| Android 9.0 Pie | Android 10 |
| 2019-06-05 | 2020-06-29 |
| 6.17 x 2.93 x 0.35 inches | 6.61 x 3.02 x 0.32 inches |
| 6.53 ounces | 6.81 ounces |
| Black and Green | Black |
| Glass (Corning Gorilla Glass 5) | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| -- | $ 194.00 |
| Display / Screen | |
| 6.4 inches | 6.5 inches |
| 2340 x 1080 pixels | 1600 x 720 pixels |
| AMOLED | IPS LCD |
| 403 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 710 SDM710 chipset | Mediatek Helio P35 chipset |
| Kryo 360, 64-bit, 10 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 616 GPU | PowerVR GE8320 GPU |
| 9.27 | 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 |
| 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, Dual SIM | Nano SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 3765mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.68 | 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 the OPPO Reno, getting a 76.1 score against 72.8. Galaxy A21's body is newer and a little bit thinner, but also just a little heavier than OPPO Reno. Both phones in this review include Android OS (operating system), but the Galaxy A21 has an older 10 version and OPPO Reno has Android 9.0 Pie version.
Galaxy A21 and OPPO Reno both have quite similar processors, and although the Galaxy A21 has a smaller amount of RAM, they both have the same number of cores. The OPPO Reno counts with a sharper screen than Galaxy A21, because although it has a little bit smaller display, it also counts with a way better resolution of 1080 x 2340px and a better number of pixels per inch in the screen.
OPPO Reno has a very superior memory to store more games and applications than Galaxy A21, because although it has no slot for SD memory cards, it also counts with 256 GB internal storage capacity. Galaxy A21 has a bit better battery duration than OPPO Reno, because it has a 4000mAh battery size against 3765mAh.
OPPO Reno shoots a lot better photographs and videos than Samsung Galaxy A21, because it has a way better video quality, a way larger camera sensor providing a lot better image quality, a lot higher 48 mega-pixels resolution camera and a larger aperture for better low-light photography.
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