Compare phones
| Global Score | |
| 85.2 | 76.7 |
| Basic Information | |
| Samsung | Xiaomi |
| -- | Android 11 |
| 2018-11-15 | 2021-05-27 |
| 6.40 x 3.03 x 0.31 inches | 6.23 x 2.96 x 0.33 inches |
| 6.46 ounces | 6.70 ounces |
| Bubblegum pink, Caviar black and Lemonade blue | Moonlight White, Neptune Blue and Space Black, |
| Glass and Metal | Glass and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.3 inches | 6.3 inches |
| 2220 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 392 pixels per inch | 409 pixels per inch |
| No touch screen | No touch screen |
| 8 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 660 SDM660 chipset | MediaTek Helio G85 MT6769Z chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Adreno 512 GPU | Mali G52 MC2 GPU |
| 9.27 | 9.09 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 128 GB) external memory slot |
| 14.14 | 10.02 |
| Camera | |
| 24.00 MP + 24.00 MP | 48.00 MP + 13.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 27.00mm focal length | -- |
| 0.36 inches (1/2.8") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| -- | 1280 x 720 (120 fps) (HD) slow motion video |
| 10.45 | 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, Dual SIM | Nano SIM |
| 6.7 | 6.6 |
| Battery Life | |
| 3800mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.76 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | 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 Galaxy A9 (2018) is better than the Xiaomi Redmi Note 8 2021, getting an 85.2 score against 76.7. The Galaxy A9 (2018) body is just a little bit lighter and a little bit thinner than Xiaomi Redmi Note 8 2021, even though it was released many years before. Galaxy A9 (2018) features a bit better processing unit than Xiaomi Redmi Note 8 2021, and although they both have 8 processing cores, the Galaxy A9 (2018) also has a greater amount of RAM.
The Xiaomi Redmi Note 8 2021 counts with a little bit better looking screen than Samsung Galaxy A9 (2018), and although they both have a same size screen, the Xiaomi Redmi Note 8 2021 also has a bit higher resolution of 1080 x 2340 and a little higher screen density. Xiaomi Redmi Note 8 2021 shoots a bit better photographs and videos than Samsung Galaxy A9 (2018), because although it has a tinier aperture which is not favorable for low-light photography, and they both have the same video frame rate and the same video resolution, the Xiaomi Redmi Note 8 2021 also counts with a way larger sensor which provides a much better photo and video quality and a camera in the back with lot more megapixels.
The Galaxy A9 (2018) has a much better memory to store more apps and games than Xiaomi Redmi Note 8 2021, because it has 128 GB internal memory and a SD card slot that holds up to 512 GB. The Xiaomi Redmi Note 8 2021 counts with a little longer battery performance than Galaxy A9 (2018), because it has a 4000mAh battery capacity against 3800mAh.
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