Compare phones
| Global Score | |
| 72.6 | 98.1 |
| Basic Information | |
| Asus | Samsung |
| Android 12 | Android 11 |
| 2022-07-28 | 2021-01-29 |
| 5.77 x 2.68 x 0.36 inches | 6.50 x 2.98 x 0.35 inches |
| 5.96 ounces | 8.04 ounces |
| -- | Phantom black and Silver |
| -- | Aluminum and Glass (Corning Gorilla Glass Victus) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 5.9 inches | 6.8 inches |
| 2400 x 1080 pixels | 3200 x 1440 pixels |
| Super AMOLED | Dynamic AMOLED |
| 446 pixels per inch | 516 pixels per inch |
| -- | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.7 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 8+ Gen1 SM8475 (4 nm) chipset | Qualcomm Snapdragon 888 chipset |
| processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 8 GB RAM | 12 GB RAM |
| Adreno 730 GPU | Adreno 660 GPU |
| 6.21 | 9.72 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 10.1 |
| Camera | |
| 50.00 MP + 12.00 MP | 108.00 MP + 40.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 14.40mm focal length | 24.00mm focal length |
| 0.64 inches (1/1.56") sensor | 0.75 inches (1/1.33") sensor |
| 7680 x 4320 (24 fps) 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 |
| 12.43 | 13.75 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | 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 |
| 10.6 | 10.7 |
| Battery Life | |
| 4300mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6.16 | 6.8 |
| Other Features | |
| Bluetooth 5.2 | 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 | FM Radio |
Comparison review
Samsung Galaxy S21 Ultra has a score of 98.1, which is way better than Asus Zenfone 9's 72.6 global score. Although Samsung Galaxy S21 Ultra is older and notably heavier than Asus Zenfone 9, it's construction is still a little thinner. These devices have Android operating system, but Samsung Galaxy S21 Ultra has the previous 11 version and Asus Zenfone 9 has Android 12.
The Samsung Galaxy S21 Ultra counts with a way better screen than Asus Zenfone 9, because it has a bigger screen, a better resolution of 1440 x 3200px and a just a bit greater pixels count per inch of screen. The Asus Zenfone 9 and the Galaxy S21 Ultra have very similar memory to install applications and games, both of them have the same 128 GB internal memory.
Galaxy S21 Ultra features a much better performing processor than Asus Zenfone 9, and although they both have the same number of cores, the Galaxy S21 Ultra also has more RAM. Galaxy S21 Ultra counts with a much better camera than Asus Zenfone 9, and although they both have the same 7680x4320 video resolution and the same 24 frames per second video frame rate, the Galaxy S21 Ultra also has a back camera with much more MP, a larger aperture for better low light captures and video and a bigger sensor which gives a better image and video quality.
Galaxy S21 Ultra has improved battery lifetime than Asus Zenfone 9, because it has a 16% bigger battery size.
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