Compare phones
| Global Score | |
| 74.2 | 84.1 |
| Basic Information | |
| Asus | Samsung |
| Android 8.0 Oreo, 7.0 Nougat | Android 11, 10 |
| 2017-10-30 | 2020-03-23 |
| 6.12 x 2.96 x 0.30 inches | 6.26 x 2.96 x 0.35 inches |
| 5.82 ounces | 6.63 ounces |
| Black, Green and White | Midnight blue and Raven black |
| Metal | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 399.00 | -- |
| Display / Screen | |
| 5.5 inches | 6.4 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| Super IPS+ LCD | Super AMOLED |
| 401 pixels per inch | 403 pixels per inch |
| 600 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.6 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 630 chipset | Exynos 9611 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Adreno 508 GPU | Mali-G72 MP3 GPU |
| 9.18 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 1,95 TB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 14.66 | 11.74 |
| Camera | |
| 12.00 MP + 8.00 MP | 48.00 MP + 20.00 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 | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 9.57 | 11.55 |
| 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 | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.28 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Samsung Galaxy M21 has an overall score of 84.1, which is better than Asus ZenFone 4's 74.2 global score. These phones have Android OS, but the Samsung Galaxy M21 has older 11 version while Asus ZenFone 4 has Android 8.0 Oreo version. The Samsung Galaxy M21 construction is incredibly newer than the Asus ZenFone 4's, but it is thicker and somewhat heavier.
The Asus ZenFone 4 counts with a little bit better display than Galaxy M21, because although it has a little smaller display, a bit inferior number of pixels per display inch and a bit lower 1080 x 1920 resolution, it also counts with more brightness. The Samsung Galaxy M21 counts with a bit better hardware performance than Asus ZenFone 4. They have 4 GB of RAM memory and a Octa-Core CPU.
The Asus ZenFone 4 features a much greater memory to store more apps and games than Galaxy M21, and although they both have the same internal memory, the Asus ZenFone 4 also has a slot for an external memory card that allows up to 1,95 TB. Galaxy M21 takes much better pictures and videos than Asus ZenFone 4, because although it has a smaller camera aperture, and they both have the same (4K) video quality and the same 30 frames per second video frame rate, the Galaxy M21 also counts with a lot more megapixels back-facing camera and a much bigger back-facing camera sensor shooting lot higher quality photographs.
Galaxy M21 features a superior battery life than Asus ZenFone 4, because it has 6000mAh of battery capacity against 3300mAh.
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