Compare phones
| Global Score | |
| 85.5 | 76.6 |
| Basic Information | |
| Samsung | OnePlus |
| Android 11, 10 | Android 11 |
| 2019-12-27 | 2021-04-02 |
| 6.24 x 2.90 x 0.31 inches | 6.43 x 2.90 x 0.34 inches |
| 6.07 ounces | 6.95 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white | Forest Green, Morning Mist and Stellar Black |
| Plastic and Plastic | Glass (Corning Gorilla Glass) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 282.00 | $ 890.00 |
| Display / Screen | |
| 6.5 inches | 6.7 inches |
| 2400 x 1080 pixels | 3216 x 1440 pixels |
| Super AMOLED | AMOLED |
| 405 pixels per inch | 526 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8.8 |
| Performance | |
| Samsung Exynos 9611 chipset | Qualcomm Snapdragon 888 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Mali-G72 MP3 GPU | Adreno 660 GPU |
| 9.27 | 9.63 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 14.14 | 10.1 |
| Camera | |
| 48.00 MP + 32.00 MP | 48.00 MP + 16.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | 23.00mm focal length |
| 0.5 inches (1/2") sensor | 0.71 inches (1/1.4") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (30 fps) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | 1280 x 720 (480 fps) (HD) slow motion video |
| 11.55 | 12.65 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 4500mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 6.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.2 |
| 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
Galaxy A51 has a global score of 85.5, which is much better than OnePlus 9 Pro's overall score of 76.6. Both devices in this comparison include the same Android 11 OS (operating system). The Galaxy A51 is an older cellphone than the OnePlus 9 Pro, but it's a bit thinner and lighter anyway. OnePlus 9 Pro has just a little better performance than Galaxy A51, and although they both have a Octa-Core CPU, the OnePlus 9 Pro also has 4 GB more RAM.
OnePlus 9 Pro counts with a bit more vivid display than Galaxy A51, because it has a better resolution of 1440 x 3216 pixels, a bit larger screen and more pixels per inch in the display. Galaxy A51 counts with much more memory capacity to store more apps and games than OnePlus 9 Pro, and although they both have equal 128 GB internal storage, the Galaxy A51 also has a SD memory slot that holds a maximum of 512 GB.
OnePlus 9 Pro has a little longer battery duration than Galaxy A51, because it has a 4500mAh battery capacity against 4000mAh. The OnePlus 9 Pro shoots clearer pictures and videos than Galaxy A51, and although they both have the same resolution back facing camera, the OnePlus 9 Pro also has a much higher video resolution, a bigger diafragm aperture and a lot bigger sensor taking much higher quality photos and videos.
Samsung Galaxy A51 is not only the best phones of the ones in this comparison, but it's also by far the cheapest.
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