Compare phones
| Global Score | |
| 76.6 | 85.5 |
| Basic Information | |
| OnePlus | Samsung |
| Android 11 | Android 11, 10 |
| 2021-04-02 | 2019-12-27 |
| 6.43 x 2.90 x 0.34 inches | 6.24 x 2.90 x 0.31 inches |
| 6.95 ounces | 6.07 ounces |
| Forest Green, Morning Mist and Stellar Black | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Glass (Corning Gorilla Glass) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 890.00 | $ 282.00 |
| Display / Screen | |
| 6.7 inches | 6.5 inches |
| 3216 x 1440 pixels | 2400 x 1080 pixels |
| AMOLED | Super AMOLED |
| 526 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 8.8 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Samsung Exynos 9611 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Mali-G72 MP3 GPU |
| 9.63 | 9.27 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 14.14 |
| Camera | |
| 48.00 MP + 16.00 MP | 48.00 MP + 32.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 23.00mm focal length | 26.00mm focal length |
| 0.71 inches (1/1.4") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (30 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (480 fps) (HD) slow motion video | 1280 x 720 (240 fps) (HD) slow motion video |
| 12.65 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 4500mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.32 | 5.92 |
| Other Features | |
| Bluetooth 5.2 | 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 A51 has a global score of 85.5, which is better than the OnePlus 9 Pro's 76.6 general score. These phones include the same Android 11 OS (Operating System), so you shouldn't perceive any differences in that aspect. The Galaxy A51 design is lighter and just a bit thinner than the OnePlus 9 Pro, even though it was released about 15 months before.
The OnePlus 9 Pro has a little bit better screen than Samsung Galaxy A51, because it has a little larger display, a greater quantity of pixels per inch in the screen and a better 1440 x 3216px resolution. OnePlus 9 Pro has a little bit better performance than Galaxy A51, and although they both have the same number of cores, the OnePlus 9 Pro also has a larger amount of RAM.
OnePlus 9 Pro counts with a bit better camera than Galaxy A51, and although they both have a same resolution back-facing camera, the OnePlus 9 Pro also has a much higher 7680x4320 video resolution, a bigger aperture and a much bigger sensor providing a lot better image quality. The Galaxy A51 counts with much more memory for apps and games than OnePlus 9 Pro, and although they both have the same 128 GB internal storage capacity, the Galaxy A51 also has a slot for an external memory card that admits up to 512 GB.
OnePlus 9 Pro counts with a bit superior battery duration than Galaxy A51, because it has 4500mAh of battery capacity.
In addition to being the best phone in our current comparison, Galaxy A51 is also by far the cheapest one.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.