Compare phones
| Global Score | |
| 73.3 | 76.7 |
| Basic Information | |
| Asus | Xiaomi |
| Android 6.0 Marshmallow | Android 11 |
| 2016-07-12 | 2021-05-27 |
| 7.34 x 3.70 x 0.27 inches | 6.23 x 2.96 x 0.33 inches |
| 8.22 ounces | 6.70 ounces |
| Gold, Gray, Pink and Silver | Moonlight White, Neptune Blue and Space Black, |
| Aluminum | Glass and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.8 inches | 6.3 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| IPS LCD | IPS LCD |
| 324 pixels per inch | 409 pixels per inch |
| No touch screen | No touch screen |
| 7.6 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 652 8976 chipset | MediaTek Helio G85 MT6769Z chipset |
| ARM Cortex-A72 and ARM Cortex-A53, 64-bit (Octa-Core 1800 MHz) processor | Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Adreno 510 GPU | Mali G52 MC2 GPU |
| 8.91 | 9.09 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| microSDXC (up to 200 GB) external memory slot | microSDXC (up to 128 GB) external memory slot |
| 12.86 | 10.02 |
| Camera | |
| 23.00 MP + 8.00 MP | 48.00 MP + 13.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| -- | 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 | 1280 x 720 (120 fps) (HD) slow motion video |
| 10.01 | 11 |
| 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 HSPA |
| Nano SIM | Nano SIM |
| 6.7 | 6.6 |
| 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 5.2 |
| GPS | GPS |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Xiaomi Redmi Note 8 2021 is a little bit better than Asus ZenFone 3 Ultra, with a 76.7 score against 73.3. These phones include Android operating system, but the Xiaomi Redmi Note 8 2021 has the older 11 version while Asus ZenFone 3 Ultra has Android 6.0 Marshmallow version. Even though the Xiaomi Redmi Note 8 2021 is thicker than the Asus ZenFone 3 Ultra, it's somewhat lighter and newer.
The Xiaomi Redmi Note 8 2021 features a bit better CPU than Asus ZenFone 3 Ultra. They have a 4 GB RAM memory and a Octa-Core CPU. The Xiaomi Redmi Note 8 2021 has a bit better screen than Asus ZenFone 3 Ultra, because although it has a bit smaller display, it also counts with a greater count of pixels per display inch and a bit higher 1080 x 2340 pixels resolution.
The Asus ZenFone 3 Ultra counts with a way bigger memory capacity to store more apps and games than Xiaomi Redmi Note 8 2021, because it has a SD memory card expansion slot that admits up to 200 GB and 128 GB internal storage. Xiaomi Redmi Note 8 2021 has a bit better camera than Asus ZenFone 3 Ultra, and although they both have the same (Full HD) video definition, the Xiaomi Redmi Note 8 2021 also has a camera in the back with way more megapixels, a bigger diafragm aperture and better 30 frames per second video frame rate.
The Asus ZenFone 3 Ultra counts with just a bit better battery life than Xiaomi Redmi Note 8 2021, because it has a 4600mAh battery size against 4000mAh.
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