Compare phones
| Global Score | |
| 84.1 | 76 |
| Basic Information | |
| Samsung | OnePlus |
| Android 11, 10 | Android 11 |
| 2020-03-23 | 2021-04-02 |
| 6.26 x 2.96 x 0.35 inches | 6.30 x 2.92 x 0.34 inches |
| 6.63 ounces | 6.77 ounces |
| Midnight blue and Raven black | Arctic Sky, Astral Black and Winter Mist |
| Plastic and Plastic | Aluminum and Glass (Corning Gorilla Glass) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 700.00 |
| Display / Screen | |
| 6.4 inches | 6.5 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | AMOLED |
| 403 pixels per inch | 405 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8.2 |
| 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
The Galaxy M21 is better than the OnePlus 9, with an 84.1 score against 76. These phones include the same Android 11 OS (Operating System), so they should provide all the same OS features. Galaxy M21 is an older and a bit thicker cellphone than the OnePlus 9, but Samsung made it a little bit lighter anyway.
The Samsung Galaxy M21 counts with a bit more vivid screen than OnePlus 9, although it has a little bit lower 1080 x 2340 pixels resolution, a bit smaller display and a little less pixels per inch of screen. Galaxy M21 has a quite bigger storage for games and applications than OnePlus 9, because although it has 0 less internal storage capacity, it also counts with a SD memory slot that supports a maximum of 512 GB.
OnePlus 9 features just a bit better performance than Galaxy M21, and although they both have a Octa-Core CPU, the OnePlus 9 also has a higher amount of RAM. OnePlus 9 counts with a slightly better camera than Samsung Galaxy M21, and although they both have the same resolution back-facing camera, the OnePlus 9 also has a bigger aperture, a much bigger sensor and a lot better 7680x4320 video resolution.
Galaxy M21 counts with superior battery duration than OnePlus 9, because it has a 6000mAh battery capacity.
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