Compare phones
| Global Score | |
| 72.6 | 76.7 |
| Basic Information | |
| Asus | Xiaomi |
| Android 12 | Android 11 |
| 2022-07-28 | 2021-05-27 |
| 5.77 x 2.68 x 0.36 inches | 6.23 x 2.96 x 0.33 inches |
| 5.96 ounces | 6.70 ounces |
| -- | Moonlight White, Neptune Blue and Space Black, |
| -- | Glass and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 5.9 inches | 6.3 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 446 pixels per inch | 409 pixels per inch |
| No touch screen | No touch screen |
| 7.7 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 8+ Gen1 SM8475 (4 nm) chipset | MediaTek Helio G85 MT6769Z chipset |
| processor | Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Adreno 730 GPU | Mali G52 MC2 GPU |
| 6.21 | 9.09 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 128 GB) external memory slot |
| 10.1 | 10.02 |
| Camera | |
| 50.00 MP + 12.00 MP | 48.00 MP + 13.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 14.40mm 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 | 1280 x 720 (120 fps) (HD) slow motion video |
| 12.43 | 11 |
| 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 HSPA |
| Nano SIM | Nano SIM |
| 10.6 | 6.6 |
| Battery Life | |
| 4300mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.16 | 5.92 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.2 |
| GPS | GPS |
| NFC | -- |
| -- | 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 9, having a general score of 76.7 against 72.6. Xiaomi Redmi Note 8 2021's body is a little thinner than Asus Zenfone 9, although it's somewhat heavier and was released just 14 months before. Both phones in this comparison review come with Android OS, but Xiaomi Redmi Note 8 2021 has older 11 version while Asus Zenfone 9 has Android 12 version.
The Xiaomi Redmi Note 8 2021 features a much greater hardware performance than Asus Zenfone 9, although it has 4 GB lesser RAM, they both have 8 cpu cores. Xiaomi Redmi Note 8 2021 counts with a bit sharper display than Asus Zenfone 9, because although it has a quite lower pixels density and a bit lower resolution of 1080 x 2340px, it also counts with a bit larger display.
The Asus Zenfone 9 shoots much clearer photographs and videos than Xiaomi Redmi Note 8 2021, because although it has a tinier aperture which is not favorable for capturing photos and videos in low light situations, it also counts with a back-facing camera with more MP, a way better 7680x4320 video definition and a much bigger camera sensor which provides a much better image and video quality.
Asus Zenfone 9 counts with a slightly bigger memory for applications, games, photos and videos than Xiaomi Redmi Note 8 2021, because although it has no external memory card slot, it also counts with 128 GB internal storage capacity. The Asus Zenfone 9 features just a little bit longer battery life than Xiaomi Redmi Note 8 2021, because it has a 4300mAh battery size.
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