Compare phones
| Global Score | |
| 72.1 | 77.7 |
| Basic Information | |
| Oppo | Samsung |
| Android 10 | Android 10 |
| 2020-08-05 | 2020-06-19 |
| 6.31 x 2.88 x 0.30 inches | 6.44 x 2.96 x 0.35 inches |
| 5.68 ounces | 6.77 ounces |
| Silky white and Starry night | Black, Blue, Red and White |
| Plastic and Plastic | -- |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 6.5 inches | 6.5 inches |
| 2400 x 1080 pixels | 1600 x 720 pixels |
| Super AMOLED | TFT |
| 405 pixels per inch | 270 pixels per inch |
| 1100 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 720G SM7125 chipset | Samsung Exynos 850 chipset |
| Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 8 GB RAM | 3 GB RAM |
| Adreno 618 GPU | Mali-G76 GPU |
| 9.36 | 9.09 |
| Storage | |
| 128 GB internal memory | 32 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 9.84 |
| Camera | |
| 48.00 MP + 32.00 MP | 48.00 MP + 13.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | -- |
| 11.66 | 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, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 6.8 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | -- |
Comparison review
Galaxy A21s is a little bit better than the OPPO Reno4 Pro, getting a general score of 77.7 against 72.1. These devices work with the same Android 10 OS (operating system). Galaxy A21s is a somewhat thicker and heavier phone than the OPPO Reno4 Pro. The OPPO Reno4 Pro counts with just a little better processing power than Samsung Galaxy A21s, and although they both have a Octa-Core processing unit, the OPPO Reno4 Pro also has a larger amount of RAM.
OPPO Reno4 Pro counts with an incredibly better display than Galaxy A21s, and although they both have a display with the same size, the OPPO Reno4 Pro also has a lot higher 1080 x 2400 pixels resolution and a greater screen density. OPPO Reno4 Pro takes just a bit better photographs and videos than Samsung Galaxy A21s, and although they both have a 48 mega pixels resolution back-facing camera and a 0.5 inches back camera sensor, the OPPO Reno4 Pro also has a bigger aperture and a much higher 3840x2160 (4K) video definition.
The OPPO Reno4 Pro has just a bit more memory for games and applications than Galaxy A21s, because although it has no SD memory card expansion slot, it also counts with 128 GB internal memory capacity. Galaxy A21s counts with greater battery performance than OPPO Reno4 Pro, because it has a 25% bigger battery capacity.
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