Compare phones
| Global Score | |
| 72.2 | 84.1 |
| Basic Information | |
| Oppo | Samsung |
| Android 8.1 Oreo | Android 11, 10 |
| 2018-07-25 | 2020-03-23 |
| 6.17 x 2.92 x 0.38 inches | 6.26 x 2.96 x 0.35 inches |
| 6.56 ounces | 6.63 ounces |
| Blue and Red | Midnight blue and Raven black |
| Aluminum and Glass | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| 403 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.2 | 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 + 25.00 MP | 48.00 MP + 20.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.38 inches (1/2.6") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 10.12 | 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 |
| Micro SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 3730mAh Li - Ion Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.68 | 7.52 |
| Other Features | |
| Bluetooth 5.0, EDR | Bluetooth 5.0 |
| GPS | GPS |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
Galaxy M21 has a global score of 84.1, which is better than OPPO Find X's global score of 72.2. Both phones we compare here use Android operating system, but the Galaxy M21 has older 11 version while OPPO Find X has Android 8.1 Oreo. Galaxy M21 is a newer and just a little bit thinner device than the OPPO Find X, but it's also just a little heavier.
OPPO Find X features a bit superior processor than Samsung Galaxy M21, and although they both have the same number of cores, the OPPO Find X also has more RAM memory. Samsung Galaxy M21 features a bit more vivid display than OPPO Find X. Both of them have the same pixel density, a screen with the same size and the same 1080 x 2340 resolution.
The Galaxy M21 counts with a better camera than OPPO Find X, and although they both have a same size aperture, the same 3840x2160 (4K) video resolution and the same video frame rates, the Galaxy M21 also has a camera in the back with a much better resolution and a way bigger back camera sensor. OPPO Find X counts with a greater storage capacity to store more apps and games than Samsung Galaxy M21, because although it has no slot for external memory cards, it also counts with 256 GB internal storage capacity.
Galaxy M21 has a really longer battery performance than OPPO Find X, because it has a 6000mAh battery size against 3730mAh.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.