Compare phones
| Global Score | |
| 73.3 | 77.7 |
| Basic Information | |
| Asus | Samsung |
| Android 6.0 Marshmallow | Android 10 |
| 2016-07-12 | 2020-06-19 |
| 7.34 x 3.70 x 0.27 inches | 6.44 x 2.96 x 0.35 inches |
| 8.22 ounces | 6.77 ounces |
| Gold, Gray, Pink and Silver | Black, Blue, Red and White |
| Aluminum | -- |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 6.8 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 1600 x 720 pixels |
| IPS LCD | TFT |
| 324 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 7.6 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 652 8976 chipset | Samsung Exynos 850 chipset |
| ARM Cortex-A72 and ARM Cortex-A53, 64-bit (Octa-Core 1800 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 4 GB RAM | 3 GB RAM |
| Adreno 510 GPU | Mali-G76 GPU |
| 8.91 | 9.09 |
| Storage | |
| 128 GB internal memory | 32 GB internal memory |
| microSDXC (up to 200 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 12.86 | 9.84 |
| Camera | |
| 23.00 MP + 8.00 MP | 48.00 MP + 13.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 3840 x 2160 (24 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (30 fps) (Full HD) slow motion video | -- |
| 10.01 | 10.78 |
| 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 | |
| 4600mAh Li - Ion Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.48 | 6.8 |
| 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
Galaxy A21s is just a bit better than Asus ZenFone 3 Ultra, having a overall score of 77.7 against 73.3. The Galaxy A21s is a extremely newer and lighter cellphone than the Asus ZenFone 3 Ultra, although it is also thicker. Both of these devices come with Android OS (operating system), but Galaxy A21s has an older 10 version while Asus ZenFone 3 Ultra has Android 6.0 Marshmallow.
Galaxy A21s features a bit better processor than Asus ZenFone 3 Ultra, although it has a lower amount of RAM memory, they both have the same number of cores. Asus ZenFone 3 Ultra has just a bit better looking screen than Galaxy A21s, because it has a little larger screen, a just a bit higher quantity of pixels per screen inch and a higher 1080 x 1920 resolution.
The Samsung Galaxy A21s features just a bit better camera than Asus ZenFone 3 Ultra, and although they both have a same size diafragm aperture and the same 1920x1080 video quality, the Samsung Galaxy A21s also has a way better resolution back-facing camera and better video frame rate. The Asus ZenFone 3 Ultra has much more storage for applications and games than Galaxy A21s, because although it has a slot for external memory cards that holds 312 GB smaller, it also counts with 128 GB internal memory capacity.
Galaxy A21s has just a bit longer battery life than Asus ZenFone 3 Ultra, because it has a 9% bigger battery size.
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