Compare phones
| Global Score | |
| 76.1 | 76 |
| Basic Information | |
| Samsung | OnePlus |
| Android 10 | Android 11 |
| 2020-06-29 | 2021-04-02 |
| 6.61 x 3.02 x 0.32 inches | 6.30 x 2.92 x 0.34 inches |
| 6.81 ounces | 6.77 ounces |
| Black | Arctic Sky, Astral Black and Winter Mist |
| Plastic and Plastic | Aluminum and Glass (Corning Gorilla Glass) |
| -- | Scratch-Resistant Glass |
| $ 194.00 | $ 700.00 |
| Display / Screen | |
| 6.5 inches | 6.5 inches |
| 1600 x 720 pixels | 2400 x 1080 pixels |
| IPS LCD | AMOLED |
| 270 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 7.3 | 8.2 |
| Performance | |
| Mediatek Helio P35 chipset | Qualcomm Snapdragon 888 chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 3 GB RAM | 8 GB RAM |
| PowerVR GE8320 GPU | Adreno 660 GPU |
| 9.27 | 9.63 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 9.84 | 10.1 |
| Camera | |
| 16.00 MP + 13.00 MP | 48.00 MP + 16.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| -- | 23.00mm focal length |
| 0.33 inches (1/3.06") sensor | 0.71 inches (1/1.4") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (30 fps) video resolution |
| -- | 1280 x 720 (480 fps) (HD) slow motion video |
| 9.35 | 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 | 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
Samsung Galaxy A21 has an overall score of 76.1, which is a little bit better than the OnePlus 9's 76 global score. Samsung Galaxy A21's body is a little thinner than the OnePlus 9, but it's a little bit heavier and was released only 9 months before. Both devices we compare here have Android operating system, but Samsung Galaxy A21 has the older 10 version while OnePlus 9 has Android 11.
The OnePlus 9 features a bit better processing unit than Samsung Galaxy A21, and although they both have 8 cpu cores, the OnePlus 9 also has more RAM. The OnePlus 9 counts with a better looking screen than Galaxy A21, and although they both have a screen with the same size, the OnePlus 9 also has a better pixels count per inch of screen and a much better 1080 x 2400px resolution.
The OnePlus 9 counts with a very superior camera than Galaxy A21, and although they both have a F1.8 aperture, the OnePlus 9 also has a much better 7680x4320 video definition, a much higher 48 MP resolution camera and a way bigger back camera sensor shooting much higher quality videos and photos. OnePlus 9 has a slightly better storage capacity for apps and games than Samsung Galaxy A21, because although it has no slot for an external memory card, it also counts with more internal memory capacity.
OnePlus 9 counts with just a little bit longer battery duration than Galaxy A21, because it has a 13 percent more battery size.
Despite of being the best phone of the ones in this comparison, the Galaxy A21 is also a bargain compared to others, making this phone a no doubt choice.
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