Compare phones
| Global Score | |
| 76.7 | 85.2 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11 | -- |
| 2021-05-27 | 2018-11-15 |
| 6.23 x 2.96 x 0.33 inches | 6.40 x 3.03 x 0.31 inches |
| 6.70 ounces | 6.46 ounces |
| Moonlight White, Neptune Blue and Space Black, | Bubblegum pink, Caviar black and Lemonade blue |
| Glass and Plastic | Glass and Metal |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 6.3 inches | 6.3 inches |
| 2340 x 1080 pixels | 2220 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 409 pixels per inch | 392 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8 |
| Performance | |
| MediaTek Helio G85 MT6769Z chipset | Qualcomm Snapdragon 660 SDM660 chipset |
| Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali G52 MC2 GPU | Adreno 512 GPU |
| 9.09 | 9.27 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.02 | 14.14 |
| Camera | |
| 48.00 MP + 13.00 MP | 24.00 MP + 24.00 MP |
| f/1.80 aperture | f/1.70 aperture |
| -- | 27.00mm focal length |
| 0.5 inches (1/2") sensor | 0.36 inches (1/2.8") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | -- |
| 11 | 10.45 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.6 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 3800mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 5.76 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.0 |
| 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
Galaxy A9 (2018) has a general score of 85.2, which is better than the Xiaomi Redmi Note 8 2021's 76.7 general score. Although Galaxy A9 (2018) is a lot older than the Xiaomi Redmi Note 8 2021, it's construction is just a bit lighter and a little thinner. The Xiaomi Redmi Note 8 2021 counts with a bit sharper display than Galaxy A9 (2018), and although they both have a same size screen, the Xiaomi Redmi Note 8 2021 also has a little bit more pixels per inch of display and a slightly better resolution of 1080 x 2340.
The Samsung Galaxy A9 (2018) has much more storage capacity for apps and games than Xiaomi Redmi Note 8 2021, because it has a slot for SD memory cards that allows up to 512 GB and 128 GB internal storage. Galaxy A9 (2018) has just a little better hardware performance than Xiaomi Redmi Note 8 2021, and although they both have 8 CPU cores, the Galaxy A9 (2018) also has a higher amount of RAM.
Xiaomi Redmi Note 8 2021 features a bit longer battery duration than Samsung Galaxy A9 (2018), because it has a 5 percent greater battery size. Xiaomi Redmi Note 8 2021 has a slightly better camera than Samsung Galaxy A9 (2018), because although it has a tinier diafragm aperture which is not good for low-light captures and videos, and they both have the same 30 fps video frame rate and the same 1920x1080 (Full HD) video definition, the Xiaomi Redmi Note 8 2021 also counts with a much larger sensor capturing much better quality photographs and videos and a much better resolution back facing camera.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.