Compare phones
| Global Score | |
| 76 | 84.1 |
| Basic Information | |
| OnePlus | Samsung |
| Android 11 | Android 11, 10 |
| 2021-04-02 | 2020-03-23 |
| 6.30 x 2.92 x 0.34 inches | 6.26 x 2.96 x 0.35 inches |
| 6.77 ounces | 6.63 ounces |
| Arctic Sky, Astral Black and Winter Mist | Midnight blue and Raven black |
| Aluminum and Glass (Corning Gorilla Glass) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 700.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| 405 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.2 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | 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 | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 11.74 |
| Camera | |
| 48.00 MP + 16.00 MP | 48.00 MP + 20.00 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 | 1920 x 1080 (240 fps) (Full 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 | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.32 | 7.52 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Galaxy M21 has a general score of 84.1, which is much better than the OnePlus 9's 76 score. Both devices in this review use the same Android 11 operating system, so both of them should provide the user very similar OS features. The Galaxy M21 is an older and a little bit thicker cellphone than OnePlus 9, but Samsung was able to make it just a little lighter anyway.
OnePlus 9 has a little bit better processing power than Galaxy M21, and although they both have 8 processing cores, the OnePlus 9 also has a larger amount of RAM memory. Samsung Galaxy M21 counts with a bit sharper display than OnePlus 9, although it has a bit lower 1080 x 2340 resolution, a just a little worse pixel quantity per inch in the display and a little bit smaller display.
The OnePlus 9 takes just a bit better photos and videos than Galaxy M21, and although they both have the same resolution camera, the OnePlus 9 also has a bigger diafragm aperture for better captures and videos in low-light environments, a lot higher video resolution and a way bigger back camera sensor providing a way higher image quality.
Galaxy M21 features a better storage capacity to install games and applications than OnePlus 9, because although it has 0 less internal storage, it also counts with a SD memory card expansion slot that admits up to 512 GB. Samsung Galaxy M21 features greater battery performance than OnePlus 9, because it has 6000mAh of battery capacity.
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