Compare phones
| Global Score | |
| 76.6 | 76.1 |
| Basic Information | |
| OnePlus | Samsung |
| Android 11 | Android 10 |
| 2021-04-02 | 2020-06-29 |
| 6.43 x 2.90 x 0.34 inches | 6.61 x 3.02 x 0.32 inches |
| 6.95 ounces | 6.81 ounces |
| Forest Green, Morning Mist and Stellar Black | Black |
| Glass (Corning Gorilla Glass) | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| $ 890.00 | $ 194.00 |
| Display / Screen | |
| 6.7 inches | 6.5 inches |
| 3216 x 1440 pixels | 1600 x 720 pixels |
| AMOLED | IPS LCD |
| 526 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8.8 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Mediatek Helio P35 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 8 GB RAM | 3 GB RAM |
| Adreno 660 GPU | PowerVR GE8320 GPU |
| 9.63 | 9.27 |
| 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 + 16.00 MP | 16.00 MP + 13.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 23.00mm focal length | -- |
| 0.71 inches (1/1.4") sensor | 0.33 inches (1/3.06") sensor |
| 7680 x 4320 (30 fps) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (480 fps) (HD) slow motion video | -- |
| 12.65 | 9.35 |
| 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 |
| 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
OnePlus 9 Pro is a little bit better than Galaxy A21, with a 76.6 score against 76.1. OnePlus 9 Pro's design is newer, but a little bit heavier and a bit thicker than Galaxy A21. Both of these phones come with Android OS (operating system), but OnePlus 9 Pro has newer 11 version and Galaxy A21 has Android 10, giving you a couple additional features.
The OnePlus 9 Pro has a bit superior processing unit than Samsung Galaxy A21, and although they both have the same number of cores, the OnePlus 9 Pro also has 5 GB more RAM memory. The OnePlus 9 Pro features a lot better display than Galaxy A21, because it has a lot higher pixels density, a little bit larger display and a way higher resolution of 1440 x 3216 pixels.
The OnePlus 9 Pro captures greater pictures and videos than Samsung Galaxy A21, and although they both have a same size diafragm aperture, the OnePlus 9 Pro also has a way larger back camera sensor providing a way better image quality, a camera with lot more mega pixels and a lot higher video resolution.
OnePlus 9 Pro counts with a little bit more memory capacity for games and applications than Galaxy A21, because although it has no SD memory slot, it also counts with 128 GB internal storage. OnePlus 9 Pro has just a bit better battery life than Galaxy A21, because it has 4500mAh of battery capacity against 4000mAh.
Although OnePlus 9 Pro is a better device, it is a lot more expensive than Samsung Galaxy A21, and it doesn't have such a good price and quality relation as Samsung Galaxy A21. If you want to save some dollars, you can get the Samsung Galaxy A21, giving up a few features and specs, but you will get the most with your budget.
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