Compare phones
| Global Score | |
| 84.1 | 76 |
| Basic Information | |
| Samsung | OnePlus |
| Android 11, 10 | -- |
| 2020-03-23 | 2020-04-21 |
| 6.26 x 2.96 x 0.35 inches | 6.31 x 2.87 x 0.31 inches |
| 6.63 ounces | 6.35 ounces |
| Midnight blue and Raven black | Glacial green |
| Plastic and Plastic | Aluminum and Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 330.00 |
| 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 | 1100 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 9 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 865 SM8250 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 585, 64-bit, 7 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Mali-G72 MP3 GPU | Adreno 650 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 | 25.00mm focal length |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (480 fps) (HD) slow motion video |
| 11.55 | 11.88 |
| 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, Dual SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 4300mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 6.16 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1 |
| 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 is better than OnePlus 8, having a overall score of 84.1 against 76. Even being the best in this comparison review, we must note that it is also just a little heavier and thicker. The OnePlus 8 has a bit better display than Galaxy M21, because it has a slightly higher resolution of 1080 x 2400 pixels, a little greater display density, a really brighter display and a little bigger display.
The Galaxy M21 features more memory for applications, games, photos and videos than OnePlus 8, because although it has just 64 GB internal storage, it also counts with a SD extension slot that admits up to 512 GB. The OnePlus 8 features a bit more powerful CPU than Galaxy M21, and although they both have 8 cpu cores, the OnePlus 8 also has a greater amount of RAM.
OnePlus 8 counts with just a bit better camera than Galaxy M21, and although they both have a same resolution camera in the back, the same 3840x2160 video quality and the same camera sensor size, the OnePlus 8 also has a bigger aperture to take better photos in low-light situations and higher video frame rate.
Galaxy M21 counts with a much better battery duration than OnePlus 8, because it has 6000mAh of battery capacity.
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