Compare phones
| Global Score | |
| 75.5 | 76.1 |
| Basic Information | |
| Asus | Samsung |
| Android 8.0 Oreo, 7.1 Nougat | Android 10 |
| 2017-10-30 | 2020-06-29 |
| 6.18 x 2.98 x 0.30 inches | 6.61 x 3.02 x 0.32 inches |
| 6.17 ounces | 6.81 ounces |
| Black and White | Black |
| Glass and Metal | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| $ 599.00 | $ 194.00 |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 1600 x 720 pixels |
| AMOLED | IPS LCD |
| 401 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 835 MSM8998 chipset | Mediatek Helio P35 chipset |
| Kryo 280, 64-bit, 10 nm (Octa-Core 2450 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 3 GB RAM |
| Adreno 540 GPU | PowerVR GE8320 GPU |
| 9.45 | 9.27 |
| 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 | 16.00 MP + 13.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 25.00mm focal length | -- |
| 0.39 inches (1/2.55") sensor | 0.33 inches (1/3.06") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 9.68 | 9.35 |
| 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 |
| 6.7 | 6.7 |
| Battery Life | |
| 3600mAh Li - Ion Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.6 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy A21 has a score of 76.1, which is slightly better than Asus ZenFone 4 Pro's score of 75.5. Even though Galaxy A21 is extremely newer than Asus ZenFone 4 Pro, it's just a little thicker and a little heavier. These phones include Android operating system, but Galaxy A21 has the older 10 version while Asus ZenFone 4 Pro has Android 8.0 Oreo.
Asus ZenFone 4 Pro features a more vivid screen than Samsung Galaxy A21, because although it has a quite smaller display, it also counts with a higher resolution of 1080 x 1920px and a better pixel density. The Asus ZenFone 4 Pro counts with a bit more powerful processing unit than Samsung Galaxy A21, and although they both have the same number of cores, the Asus ZenFone 4 Pro also has 3 GB more RAM.
Asus ZenFone 4 Pro features a lot bigger storage capacity to store more apps and games than Samsung Galaxy A21, because it has an external memory card slot that supports a maximum of 1,95 TB and 32 GB more internal storage. Asus ZenFone 4 Pro has a slightly better camera than Galaxy A21, because although it has a way worse 12 MP resolution camera, it also counts with a larger sensor capturing higher quality videos and photos, a larger aperture for better images in poorly lited environments and a way higher (4K) video resolution.
Samsung Galaxy A21 counts with just a bit longer battery duration than Asus ZenFone 4 Pro, because it has an 11% larger battery capacity.
The Galaxy A21 not only is the best phones of the ones we are comparing here, but it's also a bargain compared to others.
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