Compare phones
| Global Score | |
| 77.5 | 84.1 |
| Basic Information | |
| Asus | Samsung |
| -- | Android 11, 10 |
| 2016-07-12 | 2020-03-23 |
| 6.16 x 3.05 x 0.30 inches | 6.26 x 2.96 x 0.35 inches |
| 6.00 ounces | 6.63 ounces |
| 16 777 216 | Midnight blue and Raven black |
| Aluminum | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 5.7 inches | 6.4 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 386 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.9 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 821 MSM8996 Pro chipset | Exynos 9611 chipset |
| Kryo, 64-bit (Quad-Core 2400 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Adreno 530 GPU | Mali-G72 MP3 GPU |
| 9.09 | 9.27 |
| Storage | |
| 256 GB internal memory | 64 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 15.62 | 11.74 |
| Camera | |
| 23.00 MP + 8.00 MP | 48.00 MP + 20.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.38 inches (1/2.6") 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 |
| 10.23 | 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 |
| Micro SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 3000mAh Li - Ion Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 4.96 | 7.52 |
| 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, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Galaxy M21 has a score of 84.1, which is just a bit better than Asus ZenFone 3 Deluxe's overall score of 77.5. Even though the Galaxy M21 is noticeably newer than Asus ZenFone 3 Deluxe, it is just a little heavier and somewhat thicker. The Samsung Galaxy M21 has a little more vivid display than Asus ZenFone 3 Deluxe, because it has a slightly better 1080 x 2340 pixels resolution, a little bit bigger screen and a bit greater pixel number in each inch in the screen.
Galaxy M21 features a little bit better hardware performance than Asus ZenFone 3 Deluxe, because although it has a lower amount of RAM memory, it also counts with a greater number of cores. The Asus ZenFone 3 Deluxe counts with a much bigger storage to install applications and games or saving photos and videos than Galaxy M21, because although it has a SD card slot that holds 384 GB smaller, it also counts with 256 GB internal memory.
The Galaxy M21 shoots better photos and videos than Asus ZenFone 3 Deluxe, and although they both have a F2 aperture, the same (4K) video quality and the same video frame rate, the Galaxy M21 also has a much bigger sensor which offers a lot better image and video quality and a back-facing camera with much more megapixels.
The Galaxy M21 has a much longer battery duration than Asus ZenFone 3 Deluxe, because it has a 100% more battery capacity.
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