Compare phones
| Global Score | |
| 73.3 | 84.1 |
| Basic Information | |
| OnePlus | Samsung |
| Android 11, 10, 9.0 Pie, 8.1 Oreo | Android 11, 10 |
| 2018-05-22 | 2020-03-23 |
| 6.13 x 2.97 x 0.31 inches | 6.26 x 2.96 x 0.35 inches |
| 6.24 ounces | 6.63 ounces |
| Black, Red and White | Midnight blue and Raven black |
| Glass (Corning Gorilla Glass 5) and Metal | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 211.00 | -- |
| Display / Screen | |
| 6.3 inches | 6.4 inches |
| 2280 x 1080 pixels | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| 400 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 845 SDM845 chipset | Exynos 9611 chipset |
| Kryo 385, 64-bit, 10 nm (Octa-Core 2800 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 630 GPU | Mali-G72 MP3 GPU |
| 9.63 | 9.27 |
| Storage | |
| 256 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 13.3 | 11.74 |
| Camera | |
| 16.00 MP + 16.00 MP | 48.00 MP + 20.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 25.00mm focal length | 26.00mm focal length |
| 0.38 inches (1/2.6") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (60 fps) (4K) 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 |
| 10.45 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 3300mAh Li - Polymer Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.28 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | 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
Samsung Galaxy M21 has an overall score of 84.1, which is better than the OnePlus 6's 73.3 score. Both of these devices come with the same Android 11 OS (Operating System). The Samsung Galaxy M21 construction is newer than OnePlus 6's, but it's thicker and just a bit heavier. Galaxy M21 features a little sharper screen than OnePlus 6, because it has a bit bigger display, a bit more pixels per inch in the screen and a bit higher 1080 x 2340 resolution.
OnePlus 6 counts with a little bit better hardware performance than Samsung Galaxy M21, and although they both have 8 cores, the OnePlus 6 also has a larger amount of RAM memory. The Galaxy M21 shoots better pictures and videos than OnePlus 6, because although it has worse 30 fps video frame rates and a tinier diafragm aperture, and they both have the same (4K) video resolution, the Galaxy M21 also counts with a much larger back camera sensor which offers a lot higher image and video quality and a lot higher resolution back-facing camera.
OnePlus 6 features more storage capacity to store more apps and games than Galaxy M21, because although it has no slot for an SD memory card, it also counts with 256 GB internal memory. The Galaxy M21 features a way better battery performance than OnePlus 6, because it has a 6000mAh battery size instead of 3300mAh.
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