Compare phones
| Global Score | |
| 76.6 | 84.1 |
| Basic Information | |
| OnePlus | Samsung |
| Android 11 | Android 11, 10 |
| 2021-04-02 | 2020-03-23 |
| 6.43 x 2.90 x 0.34 inches | 6.26 x 2.96 x 0.35 inches |
| 6.95 ounces | 6.63 ounces |
| Forest Green, Morning Mist and Stellar Black | Midnight blue and Raven black |
| Glass (Corning Gorilla Glass) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 890.00 | -- |
| Display / Screen | |
| 6.7 inches | 6.4 inches |
| 3216 x 1440 pixels | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| 526 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.8 | 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 Samsung Galaxy M21 has a score of 84.1, which is slightly better than the OnePlus 9 Pro's 76.6 global score. Both devices we are comparing have the same Android 11 OS (Operating System), so you shouldn't see any differences regarding that. The Samsung Galaxy M21 is an older and just a bit thicker phone than OnePlus 9 Pro, but Samsung managed to build it a little lighter anyway.
OnePlus 9 Pro features a slightly better display than Samsung Galaxy M21, because it has a bit bigger screen, a better screen density and a higher resolution of 1440 x 3216. Samsung Galaxy M21 has more storage to install games and applications than OnePlus 9 Pro, because although it has just 64 GB internal memory capacity, it also counts with a slot for an SD memory card that holds up to 512 GB.
OnePlus 9 Pro has a little faster processor than Galaxy M21, and although they both have the same number of cores, the OnePlus 9 Pro also has more RAM. OnePlus 9 Pro takes just a bit better photos and videos than Galaxy M21, and although they both have a 48 megapixels camera in the back, the OnePlus 9 Pro also has a way bigger back-facing camera sensor capturing way better quality pictures, a way higher 7680x4320 video quality and a larger camera aperture for better photography and videos in low light situations.
The Galaxy M21 counts with longer battery lifetime than OnePlus 9 Pro, because it has 6000mAh of battery capacity instead of 4500mAh.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.