Compare phones
| Global Score | |
| 72.8 | 84.1 |
| Basic Information | |
| OnePlus | Samsung |
| Android 15 | Android 11, 10 |
| -- | 2020-03-23 |
| -- | 6.26 x 2.96 x 0.35 inches |
| -- | 6.63 ounces |
| -- | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 7.8 inches | 6.4 inches |
| 2268 x 2440 pixels | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| 427 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.7 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 8 Elite SM8550 (4 nm) chipset | Exynos 9611 chipset |
| processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 16 GB RAM | 4 GB RAM |
| Yes GPU | Mali-G72 MP3 GPU |
| 6.3 | 9.27 |
| Storage | |
| 512 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 17.6 | 11.74 |
| Camera | |
| 48.00 MP + 32.00 MP | 48.00 MP + 20.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 24.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 11.99 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.6 | 6.7 |
| Battery Life | |
| 5700mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.36 | 7.52 |
| Other Features | |
| Bluetooth 5.3 | 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 OnePlus Open 2 (Rumored)'s 72.8 general score. Both of these phones come with Android operating system, but Samsung Galaxy M21 has the older 11 version and OnePlus Open 2 (Rumored) has Android 15 version. The Samsung Galaxy M21 has an extremely better processor than OnePlus Open 2 (Rumored), although it has less RAM, they both have 8 cores.
Galaxy M21 features a little more vivid screen than OnePlus Open 2 (Rumored), although it has a way worse 1080 x 2340 pixels resolution, a quite smaller display and a little inferior pixels count in each inch in the display. The OnePlus Open 2 (Rumored) has much more storage to install games and applications than Samsung Galaxy M21, because although it has no SD memory slot, it also counts with 512 GB internal memory capacity.
OnePlus Open 2 (Rumored) counts with a slightly better camera than Galaxy M21, and although they both have a 0.5 inches sensor, the same (4K) video definition and a 48 mega-pixels resolution back-facing camera, the OnePlus Open 2 (Rumored) also has a bigger diafragm aperture to capture better low-light photography and better 60 frames per second video frame rates.
The Samsung Galaxy M21 counts with a little longer battery performance than OnePlus Open 2 (Rumored), because it has 6000mAh of battery capacity.
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