Compare phones
| Global Score | |
| 79.5 | 84.1 |
| Basic Information | |
| Asus | Samsung |
| Android 14 | Android 11, 10 |
| 2024-01-08 | 2020-03-23 |
| 6.45 x 3.02 x 0.35 inches | 6.26 x 2.96 x 0.35 inches |
| 7.94 ounces | 6.63 ounces |
| Phantom Black and Rebel Grey | Midnight blue and Raven black |
| Aluminum and Glass (Corning Gorilla Glass) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.8 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| OLED | Super AMOLED |
| 387 pixels per inch | 403 pixels per inch |
| 2500 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 9.5 | 8.4 |
| Performance | |
| QualcommSnapdragon 8 Gen 3 SM8650-AB (3 nm) chipset | Exynos 9611 chipset |
| processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 12 GB RAM | 4 GB RAM |
| Adreno 750 GPU | Mali-G72 MP3 GPU |
| 6.21 | 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 | |
| 50.00 MP + 32.00 MP | 48.00 MP + 20.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| 24.00mm focal length | 26.00mm focal length |
| 0.64 inches (1/1.56") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (24 fps) 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 |
| 12.54 | 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 | |
| 5500mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 7.2 | 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
The Galaxy M21 is slightly better than the Asus ROG Phone 8, getting an 84.1 score against 79.5. Galaxy M21's body has the same thickness than Asus ROG Phone 8, but it is lighter. Both of these devices come with Android OS (Operating System), but the Galaxy M21 has 11 version while Asus ROG Phone 8 has Android 14.
Asus ROG Phone 8 counts with a more vivid screen than Galaxy M21, because although it has a just a little lower pixel density, it also counts with a little higher resolution of 1080 x 2400, a little bit larger display and much more brightness. The Asus ROG Phone 8 has a bigger storage capacity to install games and applications than Galaxy M21, because although it has no SD card slot, it also counts with 256 GB internal storage capacity.
Galaxy M21 counts with a really superior performance than Asus ROG Phone 8, although it has a smaller amount of RAM memory, they both have the same number of cores. The Samsung Galaxy M21 has just a little better battery life than Asus ROG Phone 8, because it has 6000mAh of battery capacity instead of 5500mAh.
The Asus ROG Phone 8 captures slightly better videos and photos than Galaxy M21, because it has a much better 7680x4320 video resolution, a back-facing camera with a better 50 mega pixels resolution, a bigger aperture and a lot bigger back-facing camera sensor which offers a much higher image and video quality.
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