Compare phones
| Global Score | |
| 72.6 | 77.7 |
| Basic Information | |
| Asus | Samsung |
| Android 12 | Android 10 |
| 2022-07-28 | 2020-06-19 |
| 5.77 x 2.68 x 0.36 inches | 6.44 x 2.96 x 0.35 inches |
| 5.96 ounces | 6.77 ounces |
| -- | Black, Blue, Red and White |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 5.9 inches | 6.5 inches |
| 2400 x 1080 pixels | 1600 x 720 pixels |
| Super AMOLED | TFT |
| 446 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 7.7 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 8+ Gen1 SM8475 (4 nm) chipset | Samsung Exynos 850 chipset |
| processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 8 GB RAM | 3 GB RAM |
| Adreno 730 GPU | Mali-G76 GPU |
| 6.21 | 9.09 |
| Storage | |
| 128 GB internal memory | 32 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 9.84 |
| Camera | |
| 50.00 MP + 12.00 MP | 48.00 MP + 13.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| 14.40mm focal length | 26.00mm focal length |
| 0.64 inches (1/1.56") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (24 fps) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | -- |
| 12.43 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.6 | 6.7 |
| Battery Life | |
| 4300mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.16 | 6.8 |
| Other Features | |
| Bluetooth 5.2 | 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 is a bit better than Asus Zenfone 9, with a 77.7 score against 72.6. Both of these devices include Android operating system, but Galaxy A21s has the previous 10 version and Asus Zenfone 9 has Android 12. Galaxy A21s's construction is a little thinner than the Asus Zenfone 9, but it's heavier and was released 2 years before.
The Samsung Galaxy A21s features a really superior performance than Asus Zenfone 9, although it has 5 GB less RAM memory, they both have the same number of cores. Asus Zenfone 9 has a bit more vivid screen than Galaxy A21s, because although it has a bit smaller display, it also counts with way more pixels per screen inch and a lot higher 1080 x 2400 resolution.
The Asus Zenfone 9 captures much better photos and videos than Galaxy A21s, because it has a lot higher 7680x4320 video resolution, a larger aperture to capture better captures in low light environments, a better 50 mega-pixels resolution back camera and a much larger back camera sensor which provides a lot better image and video quality.
Asus Zenfone 9 counts with a little bit more storage for apps and games than Samsung Galaxy A21s, because although it has no slot for external memory cards, it also counts with more internal storage capacity. Samsung Galaxy A21s counts with better battery life than Asus Zenfone 9, because it has a 16 percent more battery size.
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