Compare phones
| Global Score | |
| 74.2 | 77.7 |
| Basic Information | |
| Asus | Samsung |
| Android 8.0 Oreo, 7.0 Nougat | Android 10 |
| 2017-10-30 | 2020-06-19 |
| 6.12 x 2.96 x 0.30 inches | 6.44 x 2.96 x 0.35 inches |
| 5.82 ounces | 6.77 ounces |
| Black, Green and White | Black, Blue, Red and White |
| Metal | -- |
| Scratch-Resistant Glass | -- |
| $ 399.00 | -- |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 1600 x 720 pixels |
| Super IPS+ LCD | TFT |
| 401 pixels per inch | 270 pixels per inch |
| 600 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.6 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 630 chipset | Samsung Exynos 850 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 4 GB RAM | 3 GB RAM |
| Adreno 508 GPU | Mali-G76 GPU |
| 9.18 | 9.09 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 1,95 TB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 14.66 | 9.84 |
| Camera | |
| 12.00 MP + 8.00 MP | 48.00 MP + 13.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 25.00mm focal length | 26.00mm focal length |
| 0.39 inches (1/2.55") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 9.57 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 3300mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.28 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | 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
Galaxy A21s has a general score of 77.7, which is a little bit better than Asus ZenFone 4's 74.2 overall score. Galaxy A21s's design is a lot newer than Asus ZenFone 4's, although it's heavier and somewhat thicker. Both phones we are comparing have Android OS (operating system), but Galaxy A21s has older 10 version and Asus ZenFone 4 has Android 8.0 Oreo version.
The Asus ZenFone 4 counts with a sharper display than Samsung Galaxy A21s, because although it has a quite smaller screen, it also counts with a greater count of pixels per screen inch and a higher 1080 x 1920 resolution. The Asus ZenFone 4 features a little faster processing unit than Samsung Galaxy A21s, and although they both have the same number of cores, the Asus ZenFone 4 also has a higher amount of RAM memory.
The Galaxy A21s features a better camera than Asus ZenFone 4, because although it has a smaller aperture which is not favorable for low light photos and video, and they both have the same 1920x1080 (Full HD) video definition and the same 30 fps video frame rates, the Galaxy A21s also counts with a way bigger sensor taking more light and vivid colors and a lot more mega-pixels camera in the back.
Asus ZenFone 4 counts with a very superior memory capacity to install applications and games than Samsung Galaxy A21s, because it has 32 GB more internal memory capacity and a slot for an external memory card that supports a maximum of 1,95 TB. Samsung Galaxy A21s counts with a really longer battery life than Asus ZenFone 4, because it has a 52% greater battery size.
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