| Global Score | |
| 84.1 | 81.2 |
| Basic Information | |
| Samsung | Asus |
| Android 11, 10 | Android 13 |
| 2020-03-23 | 2023-04-13 |
| 6.26 x 2.96 x 0.35 inches | 6.81 x 3.03 x 0.41 inches |
| 6.63 ounces | 8.43 ounces |
| Midnight blue and Raven black | Storm White |
| Plastic and Plastic | Glass (Corning Gorilla Glass 3) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.8 inches |
| 2340 x 1080 pixels | 2448 x 2080 pixels |
| Super AMOLED | AMOLED |
| 403 pixels per inch | 472 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 7.9 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 8 Gen 2 SM8550 (4 nm) chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | processor |
| 4 GB RAM | 16 GB RAM |
| Mali-G72 MP3 GPU | Adreno 740 GPU |
| 9.27 | 6.3 |
| Storage | |
| 64 GB internal memory | 512 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 17.6 |
| Camera | |
| 48.00 MP + 20.00 MP | 50.00 MP + 32.00 MP |
| f/2.00 aperture | -- |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.64 inches (1/1.56") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 11.55 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 10.6 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 6000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.3 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Galaxy M21 is slightly better than the Asus ROG Phone 7 Ultimate, with a score of 84.1 against 81.2. The Galaxy M21 construction is lighter and somewhat thinner than the Asus ROG Phone 7 Ultimate, even though it was released 3 years before. These phones use Android OS (Operating System), but the Galaxy M21 has the older 11 version while Asus ROG Phone 7 Ultimate has Android 13 version.
Galaxy M21 counts with a bit sharper display than Asus ROG Phone 7 Ultimate, although it has a much lower 1080 x 2340 resolution, a bit smaller screen and a just a bit worse screen density. Samsung Galaxy M21 features a very superior processing power than Asus ROG Phone 7 Ultimate, although it has a smaller amount of RAM memory, they both have 8 cores.
The Asus ROG Phone 7 Ultimate and Samsung Galaxy M21 have very similar cameras, although the Asus ROG Phone 7 Ultimate also has a lot higher 7680x4320 video definition, a back-facing camera with a better 50 megapixels resolution and a much bigger back-facing camera sensor capturing lot higher quality videos and photographs.
Asus ROG Phone 7 Ultimate features a very superior memory for applications and games than Samsung Galaxy M21, because although it has no SD card slot, it also counts with 448 GB more internal memory. The Asus ROG Phone 7 Ultimate counts with a battery lifetime that is just as good as the battery lifetime in Galaxy M21.
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