Compare phones
| Global Score | |
| 74.2 | 98.1 |
| Basic Information | |
| Asus | Samsung |
| Android 15 | Android 11 |
| -- | 2021-01-29 |
| -- | 6.50 x 2.98 x 0.35 inches |
| 8.01 ounces | 8.04 ounces |
| -- | Phantom black and Silver |
| -- | Aluminum and Glass (Corning Gorilla Glass Victus) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 1199.00 | $ 966.00 |
| Display / Screen | |
| 6.8 inches | 6.8 inches |
| -- | 3200 x 1440 pixels |
| OLED | Dynamic AMOLED |
| -- | 516 pixels per inch |
| 2500 cd/m2 brightness | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 4.8 | 9.8 |
| Performance | |
| Snapdragon 8 Elite SM8750-AB (3 nm) chipset | Qualcomm Snapdragon 888 chipset |
| processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 16 GB RAM | 12 GB RAM |
| Adreno 830 GPU | Adreno 660 GPU |
| 6.3 | 9.72 |
| Storage | |
| 512 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 17.6 | 10.1 |
| Camera | |
| 50.00 MP + 32.00 MP | 108.00 MP + 40.00 MP |
| -- | f/1.80 aperture |
| -- | 24.00mm focal length |
| 0.64 inches (1/1.56") sensor | 0.75 inches (1/1.33") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 11.22 | 13.75 |
| Networks | |
| -- | Wi-Fi |
| -- | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 7.6 | 10.7 |
| Battery Life | |
| 5800mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 7.44 | 6.8 |
| Other Features | |
| Bluetooth 5.3 | Bluetooth 5.1 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Galaxy S21 Ultra is a lot better than Asus ROG Phone 9 Pro, with a 98.1 score against 74.2. Both devices we compare here use Android OS (operating system), but the Galaxy S21 Ultra has an older 11 version and Asus ROG Phone 9 Pro has Android 15. The Galaxy S21 Ultra has a very superior performance than Asus ROG Phone 9 Pro, although it has lesser RAM, they both have a Octa-Core CPU.
Samsung Galaxy S21 Ultra counts with a much better display than Asus ROG Phone 9 Pro, although it has much worse brightness, they both have a same size screen. The Samsung Galaxy S21 Ultra takes much better pictures and videos than Asus ROG Phone 9 Pro, because it has a much higher video quality, a bigger back camera sensor taking better quality photos and videos and a camera with a lot better resolution.
The Asus ROG Phone 9 Pro features a much greater memory to install applications and games than Galaxy S21 Ultra, because it has 512 GB internal memory. Asus ROG Phone 9 Pro features a little better battery life than Galaxy S21 Ultra, because it has 5800mAh of battery capacity against 5000mAh.
The Galaxy S21 Ultra not only is the best devices between the ones we are comparing here, but it's also a lot cheaper.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.