Compare phones
| Global Score | |
| 84.1 | 76.6 |
| Basic Information | |
| Samsung | OnePlus |
| Android 11, 10 | Android 11 |
| 2020-03-23 | 2021-04-02 |
| 6.26 x 2.96 x 0.35 inches | 6.43 x 2.90 x 0.34 inches |
| 6.63 ounces | 6.95 ounces |
| Midnight blue and Raven black | Forest Green, Morning Mist and Stellar Black |
| Plastic and Plastic | Glass (Corning Gorilla Glass) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 890.00 |
| Display / Screen | |
| 6.4 inches | 6.7 inches |
| 2340 x 1080 pixels | 3216 x 1440 pixels |
| Super AMOLED | AMOLED |
| 403 pixels per inch | 526 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8.8 |
| Performance | |
| 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 | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 10.1 |
| Camera | |
| 48.00 MP + 20.00 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 |
| 1920 x 1080 (240 fps) (Full 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 | |
| 6000mAh Li - Polymer Battery | 4500mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 6.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.2 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Samsung Galaxy M21 has a score of 84.1, which is a bit better than OnePlus 9 Pro's 76.6 global score. These phones use the same Android 11 operating system, so both should give you the same OS features. Samsung Galaxy M21's body is a little bit lighter than OnePlus 9 Pro, but it's just a bit thicker and was released just a little more than a year before.
OnePlus 9 Pro has a bit more powerful processing unit than Galaxy M21, and although they both have the same number of cores, the OnePlus 9 Pro also has more RAM. The OnePlus 9 Pro has a bit more vivid display than Galaxy M21, because it has more pixels per screen inch, a bit bigger screen and a better resolution of 1440 x 3216px.
OnePlus 9 Pro captures a little bit better videos and photos than Galaxy M21, and although they both have the same resolution back facing camera, the OnePlus 9 Pro also has a way bigger back-facing camera sensor providing a much higher image quality, a much higher video resolution and a bigger aperture to take better low-light photos.
Samsung Galaxy M21 features a better memory capacity for games and applications than OnePlus 9 Pro, because although it has 0 less internal storage capacity, it also counts with a slot for an SD memory card that admits a maximum of 512 GB. Galaxy M21 has better battery lifetime than OnePlus 9 Pro, because it has a 6000mAh battery size against 4500mAh.
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