Compare phones
| Global Score | |
| 83 | 77.7 |
| Basic Information | |
| Asus | Samsung |
| Android 11 | Android 10 |
| 2021-05-13 | 2020-06-19 |
| 5.83 x 2.70 x 0.35 inches | 6.44 x 2.96 x 0.35 inches |
| 5.96 ounces | 6.77 ounces |
| Horizon Silver and Obsidian Black | Black, Blue, Red and White |
| Aluminum and Glass (Corning Gorilla Glass 3) | -- |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 5.9 inches | 6.5 inches |
| 2400 x 1080 pixels | 1600 x 720 pixels |
| AMOLED | TFT |
| 446 pixels per inch | 270 pixels per inch |
| 1100 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.2 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 888 SM8350 chipset | Samsung Exynos 850 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 6 GB RAM | 3 GB RAM |
| Adreno 660 GPU | Mali-G76 GPU |
| 9.63 | 9.09 |
| Storage | |
| 128 GB internal memory | 32 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 9.84 |
| Camera | |
| 64.00 MP + 12.00 MP | 48.00 MP + 13.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 27.00mm focal length | 26.00mm focal length |
| 0.59 inches (1/1.7") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (24 fps) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (480 fps) (HD) slow motion video | -- |
| 12.65 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 10.6 | 6.7 |
| Battery Life | |
| 4000mAh Nano SIM Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 6.8 |
| Other Features | |
| Bluetooth 5.2, EDR | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | -- |
Comparison review
Asus ZenFone 8 has a general score of 83, which is slightly better than the Galaxy A21s's 77.7 global score. Both of these phones use Android OS, but the Asus ZenFone 8 has 11 version and Galaxy A21s has Android 10, providing some additional features. The Asus ZenFone 8 is a lighter cellphone than Galaxy A21s, but both have the same thickness.
The Asus ZenFone 8 features an incredibly better looking display than Samsung Galaxy A21s, because although it has a little bit smaller display, it also counts with a way higher resolution of 1080 x 2400 and way more pixels per inch of display. The Asus ZenFone 8 counts with just a little better performance than Samsung Galaxy A21s, and although they both have 8 cores, the Asus ZenFone 8 also has a higher amount of RAM.
Asus ZenFone 8 has a superior camera than Galaxy A21s, because it has a back-facing camera with much more mega-pixels, a bigger aperture to take better images in poorly lited situations, a lot better video quality and a bigger sensor providing a higher image quality. The Asus ZenFone 8 counts with just a bit bigger memory for apps and games than Samsung Galaxy A21s, because although it has no external memory card slot, it also counts with more internal memory capacity.
Samsung Galaxy A21s features superior battery life than Asus ZenFone 8, because it has a 5000mAh battery capacity instead of 4000mAh.
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