| Global Score | |
| 94 | 84.1 |
| Basic Information | |
| Asus | Samsung |
| -- | Android 11, 10 |
| 2021-06-07 | 2020-03-23 |
| 6.80 x 3.04 x 0.41 inches | 6.26 x 2.96 x 0.35 inches |
| 8.40 ounces | 6.63 ounces |
| Matte White | Midnight blue and Raven black |
| Aluminum and Glass (Corning Gorilla Glass 3) | 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 |
| 9 | 8.4 |
| Performance | |
| 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 |
| 18 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Mali-G72 MP3 GPU |
| 9.81 | 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 | |
| 64.00 MP + 24.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 11.00mm focal length | 26.00mm focal length |
| 0.59 inches (1/1.7") 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 |
| 12.87 | 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, Dual SIM | Nano SIM, Dual SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 6000mAh Nano SIM Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 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 |
Asus ROG Phone 5 Ultimate is better than Galaxy M21, getting a 94 score against 84.1. Asus ROG Phone 5 Ultimate is a newer device than Galaxy M21, although it is somewhat thicker and way heavier. The Asus ROG Phone 5 Ultimate counts with a little more vivid display than Galaxy M21, because although it has a bit lower display pixels density, it also counts with much more screen brightness, a little higher 1080 x 2448 resolution and a little bit bigger screen.
The Asus ROG Phone 5 Ultimate has just a little better hardware performance than Galaxy M21, and although they both have the same number of cores, the Asus ROG Phone 5 Ultimate also has 14 GB more RAM. The Asus ROG Phone 5 Ultimate counts with a much better memory for applications, games, photos and videos than Galaxy M21, because although it has no slot for external memory cards, it also counts with 512 GB internal storage.
The Asus ROG Phone 5 Ultimate captures much better pictures and videos than Galaxy M21, because it has a way more megapixels back camera, a larger back-facing camera sensor shooting higher quality videos and photos, a way better 7680x4320 video quality and a bigger diafragm aperture. The Samsung Galaxy M21 features a battery lifetime that is very similar to the Asus ROG Phone 5 Ultimate one.
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