| Global Score | |
| 79.6 | 84.1 |
| Basic Information | |
| Asus | Samsung |
| Android 12 | Android 11, 10 |
| 2022-07-05 | 2020-03-23 |
| 6.81 x 3.03 x 0.41 inches | 6.26 x 2.96 x 0.35 inches |
| 8.43 ounces | 6.63 ounces |
| Storm White | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.8 inches | 6.4 inches |
| 2448 x 1080 pixels | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| 393 pixels per inch | 403 pixels per inch |
| 1200 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.9 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 8+ Gen 1 SM8450 (4 nm) chipset | Exynos 9611 chipset |
| processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 18 GB RAM | 4 GB RAM |
| Adreno 730 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 | |
| 50.00 MP + 12.00 MP | 48.00 MP + 20.00 MP |
| -- | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| -- | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 8.36 | 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 | |
| 6000mAh Dual Nano SIM Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 7.52 |
| Other Features | |
| Bluetooth | 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 |
The Samsung Galaxy M21 has a global score of 84.1, which is slightly better than Asus ROG Phone 6 Pro's score of 79.6. Both devices in our current comparison work with Android OS, but the Samsung Galaxy M21 has the previous 11 version while Asus ROG Phone 6 Pro has Android 12. The Samsung Galaxy M21 construction is notably lighter and thinner than Asus ROG Phone 6 Pro, even though it was released many years before.
The Galaxy M21 has a much better processing power than Asus ROG Phone 6 Pro, although it has a smaller amount of RAM memory, they both have the same number of cores. The Asus ROG Phone 6 Pro has a little more vivid screen than Galaxy M21, because although it has a bit less pixels per inch of screen, it also counts with a much brighter screen, a quite better resolution of 1080 x 2448 and a little bit larger display.
The Asus ROG Phone 6 Pro counts with a much bigger memory capacity for games and applications than Galaxy M21, because although it has no SD card slot, it also counts with 448 GB more internal memory. The Galaxy M21's battery lifetime is very similar to the battery life in Asus ROG Phone 6 Pro. The Galaxy M21 has a way better camera than Asus ROG Phone 6 Pro, although it has a camera with less megapixels.
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