Compare phones
| Global Score | |
| 72.6 | 91.8 |
| Basic Information | |
| Asus | Samsung |
| Android 12 | Android 11 |
| 2022-07-28 | 2021-01-29 |
| 5.77 x 2.68 x 0.36 inches | 5.97 x 2.80 x 0.31 inches |
| 5.96 ounces | 6.03 ounces |
| -- | Gray, Phantom pink, Violet and White |
| -- | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 5.9 inches | 6.2 inches |
| 2400 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | Dynamic AMOLED |
| 446 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.7 | 9.2 |
| 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 | 8 GB RAM |
| Adreno 730 GPU | Adreno 660 GPU |
| 6.21 | 9.63 |
| 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 | 12.00 MP + 10.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 14.40mm focal length | 26.00mm focal length |
| 0.64 inches (1/1.56") sensor | 0.57 inches (1/1.76") 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 | 10.78 |
| 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 | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6.16 | 5.92 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.0 |
| 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
Galaxy S21 is much better than Asus Zenfone 9, getting a 91.8 score against 72.6. Both of these devices come with Android OS (Operating System), but the Galaxy S21 has an older 11 version while Asus Zenfone 9 has Android 12 version. Despite of the fact Galaxy S21 is older and just a bit heavier than the Asus Zenfone 9, it's design is still somewhat thinner.
Samsung Galaxy S21 has a really superior performance than Asus Zenfone 9. Both have a 8 GB RAM memory and a Octa-Core processing unit. Galaxy S21 features a better display than Asus Zenfone 9, because although it has a little less pixels per screen inch, and they both have an equal resolution of 1080 x 2400, the Galaxy S21 also counts with a bit larger screen.
Asus Zenfone 9 counts with a much better camera than Galaxy S21, because although it has a smaller aperture which is not nice for taking images or video in low light situations, and they both have the same video definition and the same video frame rates, the Asus Zenfone 9 also counts with a lot more mega pixels back facing camera and a larger sensor taking higher quality pictures and videos.
The Samsung Galaxy S21's storage for applications, games, photos and videos is just as good as the Asus Zenfone 9 one, both have the same 128 GB internal storage. Asus Zenfone 9 counts with a bit longer battery performance than Samsung Galaxy S21, because it has 4300mAh of battery capacity.
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