Compare phones
| Global Score | |
| 73.3 | 91.8 |
| Basic Information | |
| Asus | Samsung |
| Android 6.0 Marshmallow | Android 11 |
| 2016-07-12 | 2021-01-29 |
| 7.34 x 3.70 x 0.27 inches | 5.97 x 2.80 x 0.31 inches |
| 8.22 ounces | 6.03 ounces |
| Gold, Gray, Pink and Silver | Gray, Phantom pink, Violet and White |
| Aluminum | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 6.8 inches | 6.2 inches |
| 1920 x 1080 pixels (Full HD) | 2400 x 1080 pixels |
| IPS LCD | Dynamic AMOLED |
| 324 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.6 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 652 8976 chipset | Qualcomm Snapdragon 888 chipset |
| ARM Cortex-A72 and ARM Cortex-A53, 64-bit (Octa-Core 1800 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Adreno 510 GPU | Adreno 660 GPU |
| 8.91 | 9.63 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 200 GB) external memory slot | No SD card slot |
| 12.86 | 10.1 |
| Camera | |
| 23.00 MP + 8.00 MP | 12.00 MP + 10.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| -- | 26.00mm focal length |
| -- | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (24 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (30 fps) (Full HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 10.01 | 10.78 |
| 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), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 4600mAh Li - Ion Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6.48 | 5.92 |
| Other Features | |
| Bluetooth 4.2, EDR | Bluetooth 5.0 |
| GPS | GPS |
| -- | 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
The Galaxy S21 is much better than the Asus ZenFone 3 Ultra, with a overall score of 91.8 against 73.3. Galaxy S21's body is much newer and a lot lighter than the Asus ZenFone 3 Ultra's, although it is thicker. These phones have Android OS (operating system), but the Galaxy S21 has an older 11 version and Asus ZenFone 3 Ultra has Android 6.0 Marshmallow version.
Samsung Galaxy S21 counts with a way better looking screen than Asus ZenFone 3 Ultra, because although it has a bit smaller display, it also counts with a higher screen pixels density and a bit higher 1080 x 2400 resolution. The Asus ZenFone 3 Ultra features a much better storage capacity for applications and games than Samsung Galaxy S21, and although they both have the same internal storage capacity, the Asus ZenFone 3 Ultra also has a SD memory slot that supports a maximum of 200 GB.
Samsung Galaxy S21 counts with just a bit better hardware performance than Asus ZenFone 3 Ultra, and although they both have 8 processing cores, the Samsung Galaxy S21 also has more RAM. The Samsung Galaxy S21 counts with a bit better camera than Asus ZenFone 3 Ultra, because although it has a much less mega pixels resolution back camera, it also counts with a way better video quality and a larger aperture to take better captures and video in low light situations.
Asus ZenFone 3 Ultra has just a little better battery lifetime than Galaxy S21, because it has a 15 percent greater battery capacity.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.