Compare phones
| Global Score | |
| 72.1 | 86.5 |
| Basic Information | |
| Oppo | Samsung |
| Android 10 | Android 11, 10 |
| 2020-08-05 | 2020-03-05 |
| 6.31 x 2.88 x 0.30 inches | 6.27 x 2.96 x 0.35 inches |
| 5.68 ounces | 6.74 ounces |
| Silky white and Starry night | Black, Blue and Red |
| Plastic and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 405 pixels per inch | 403 pixels per inch |
| 1100 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 9 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 720G SM7125 chipset | Exynos 9611 chipset |
| Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 8 GB RAM | 6 GB RAM |
| Adreno 618 GPU | Mali-G72 MP3 GPU |
| 9.36 | 9.36 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 11.74 |
| Camera | |
| 48.00 MP + 32.00 MP | 64.00 MP + 32.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| -- | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.59 inches (1/1.7") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 11.66 | 12.1 |
| 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 | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 7.52 |
| 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, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy M31 is better than OPPO Reno4 Pro, having an 86.5 score against 72.1. Both phones in this review use Android OS, but the Galaxy M31 has the newer 11 version while OPPO Reno4 Pro has Android 10 version. Despite being the best in this comparison review, the Galaxy M31 is a thicker and heavier phone than OPPO Reno4 Pro.
OPPO Reno4 Pro has a little sharper screen than Samsung Galaxy M31, because it has a slightly higher 1080 x 2400 resolution, a little larger display, much more brightness and a bit higher pixel number per inch in the screen. Galaxy M31 has a greater storage capacity to install applications and games or saving photos and videos than OPPO Reno4 Pro, because although it has less internal storage capacity, it also counts with an external memory slot that allows up to 512 GB.
The Galaxy M31 counts with a CPU that is just as good as the CPU in OPPO Reno4 Pro, and although the Galaxy M31 has a smaller amount of RAM, they both have 8 cores. The Galaxy M31 features a way better battery life than OPPO Reno4 Pro, because it has 6000mAh of battery capacity. The Galaxy M31 features a slightly better camera than OPPO Reno4 Pro, because although it has a tinier aperture which is not recommended for shooting images and/or video in poorly lited environments, and they both have the same 3840x2160 (4K) video resolution and the same 30 frames per second video frame rate, the Galaxy M31 also counts with a larger sensor and a back facing camera with a much better 64 mega-pixels resolution.
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