Compare phones
| Global Score | |
| 73.3 | 76.1 |
| Basic Information | |
| Asus | Samsung |
| Android 6.0 Marshmallow | Android 10 |
| 2016-07-12 | 2020-06-29 |
| 7.34 x 3.70 x 0.27 inches | 6.61 x 3.02 x 0.32 inches |
| 8.22 ounces | 6.81 ounces |
| Gold, Gray, Pink and Silver | Black |
| Aluminum | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| -- | $ 194.00 |
| Display / Screen | |
| 6.8 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 1600 x 720 pixels |
| IPS LCD | IPS LCD |
| 324 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 7.6 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 652 8976 chipset | Mediatek Helio P35 chipset |
| ARM Cortex-A72 and ARM Cortex-A53, 64-bit (Octa-Core 1800 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 3 GB RAM |
| Adreno 510 GPU | PowerVR GE8320 GPU |
| 8.91 | 9.27 |
| 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 | 16.00 MP + 13.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| -- | 0.33 inches (1/3.06") 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 | 9.35 |
| 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 |
| 6.7 | 6.7 |
| Battery Life | |
| 4600mAh Li - Ion Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.48 | 5.92 |
| 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, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Samsung Galaxy A21 is slightly better than the Asus ZenFone 3 Ultra, having a score of 76.1 against 73.3. Both of these phones work with Android OS, but Samsung Galaxy A21 has older 10 version while Asus ZenFone 3 Ultra has Android 6.0 Marshmallow version. Samsung Galaxy A21's body is incredibly newer and somewhat lighter than Asus ZenFone 3 Ultra's, but it is also somewhat thicker.
The Asus ZenFone 3 Ultra features a bit more vivid display than Samsung Galaxy A21, because it has a bit more pixels per screen inch, a better 1080 x 1920px resolution and a bit bigger display. The Asus ZenFone 3 Ultra counts with a very superior storage for applications and games than Samsung Galaxy A21, because although it has a slot for an external memory card that supports 312 GB smaller, it also counts with 128 GB internal storage.
The Galaxy A21 has just a bit better processing power than Asus ZenFone 3 Ultra, although it has less RAM memory, they both have a Octa-Core processor. The Asus ZenFone 3 Ultra shoots slightly better videos and photos than Samsung Galaxy A21, because although it has a tinier aperture which is not recommended for low-light photography, it also counts with a way better 3840x2160 (4K) video resolution and a camera with a way higher 23 MP resolution.
The Asus ZenFone 3 Ultra counts with a bit better battery duration than Galaxy A21, because it has a 15 percent more battery size.
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