Compare phones
| Global Score | |
| 84.1 | 83 |
| Basic Information | |
| Samsung | Asus |
| Android 11, 10 | Android 11 |
| 2020-03-23 | 2021-05-13 |
| 6.26 x 2.96 x 0.35 inches | 5.83 x 2.70 x 0.35 inches |
| 6.63 ounces | 5.96 ounces |
| Midnight blue and Raven black | Horizon Silver and Obsidian Black |
| Plastic and Plastic | Aluminum and Glass (Corning Gorilla Glass 3) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 5.9 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | AMOLED |
| 403 pixels per inch | 446 pixels per inch |
| 420 cd/m2 brightness | 1100 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 9.2 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 888 SM8350 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Adreno 660 GPU |
| 9.27 | 9.63 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 10.1 |
| Camera | |
| 48.00 MP + 20.00 MP | 64.00 MP + 12.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | 27.00mm focal length |
| 0.5 inches (1/2") sensor | 0.59 inches (1/1.7") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (480 fps) (HD) slow motion video |
| 11.55 | 12.65 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 10.6 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 4000mAh Nano SIM Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.2, EDR |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy M21 is a little bit better than Asus ZenFone 8, with a score of 84.1 against 83. These phones work with the same Android 11 operating system, so they should give very similar operating system features. The Galaxy M21 is a somewhat heavier cellphone than Asus ZenFone 8, but both have the same thickness.
The Asus ZenFone 8 features just a bit better looking screen than Galaxy M21, because although it has a bit smaller screen, it also counts with way more brightness, a slightly better resolution of 1080 x 2400 and a bit greater pixels amount in each inch of display. The Galaxy M21 features a quite bigger storage to store more apps and games than Asus ZenFone 8, because although it has just 64 GB internal memory capacity, it also counts with a slot for external memory cards that supports up to 512 GB.
Asus ZenFone 8 counts with a little better performance than Galaxy M21, and although they both have 8 cpu cores, the Asus ZenFone 8 also has more RAM. The Asus ZenFone 8 captures slightly better photos and videos than Samsung Galaxy M21, because it has a bigger camera aperture to capture better low-light photos and video, a much better video resolution, a bigger sensor which offers a better photo and video quality and a back facing camera with much more megapixels.
The Galaxy M21 features a much longer battery duration than Asus ZenFone 8, because it has a 50% greater battery capacity.
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