Compare phones
| Global Score | |
| 75 | 79 |
| Basic Information | |
| Xiaomi | Xiaomi |
| Android 9.0 Pie, 8.1 Oreo, 8.0 Oreo, 7.1 Nougat | Android 11, 10 |
| 2017-09-12 | 2020-04-07 |
| 6.12 x 2.98 x 0.29 inches | 6.53 x 3.02 x 0.35 inches |
| 5.82 ounces | 7.37 ounces |
| Black, Gold and Pink | Aurora blue, Glacier white and Interstellar grey |
| Metal | Glass (Corning Gorilla Glass 5) |
| -- | Scratch-Resistant Glass |
| -- | $ 249.00 |
| Display / Screen | |
| 5.5 inches | 6.7 inches |
| 1920 x 1080 pixels (Full HD) | 2400 x 1080 pixels |
| IPS LCD | IPS LCD |
| 401 pixels per inch | 393 pixels per inch |
| 450 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8 |
| Performance | |
| Qualcomm Snapdragon 625 8953 chipset | Qualcomm Snapdragon 720G SM7125 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 2000 MHz) processor | Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Adreno 506 GPU | Adreno 618 GPU |
| 9.09 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.78 | 11.74 |
| Camera | |
| 12.00 MP + 5.00 MP | 48.00 MP + 16.00 MP |
| f/2.20 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| -- | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 9.35 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 3080mAh Li - Ion Battery | 5020mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.04 | 6.8 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| Infra-red port | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Xiaomi Redmi Note 9S has a general score of 79, which is a little bit better than the Xiaomi Mi A1's score of 75. These devices work with Android OS (operating system), but Xiaomi Redmi Note 9S has 11 version while Xiaomi Mi A1 has Android 9.0 Pie. The Xiaomi Redmi Note 9S is a way newer phone than the Xiaomi Mi A1, although it is somewhat thicker and extremely heavier.
The Xiaomi Mi A1 has a bit sharper display than Xiaomi Redmi Note 9S, because although it has a bit lower resolution of 1080 x 1920px and a bit smaller display, it also counts with a bit greater count of pixels per inch in the display. Xiaomi Redmi Note 9S features just a little better processing power than Xiaomi Mi A1. Both have a Octa-Core processing unit and the same RAM memory amount.
Xiaomi Redmi Note 9S captures greater photos and videos than Xiaomi Mi A1, and although they both have the same (4K) video definition and the same video frame rates, the Xiaomi Redmi Note 9S also has a camera with way more mega-pixels and a larger camera aperture to take better photos and videos in low light situations.
Xiaomi Redmi Note 9S has just a bit bigger memory capacity to install applications and games than Xiaomi Mi A1, and although they both have the same internal storage, the Xiaomi Redmi Note 9S also has a SD memory card expansion slot that supports up to 512 GB. Xiaomi Redmi Note 9S counts with a much longer battery life than Xiaomi Mi A1, because it has a 5020mAh battery size.
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