Compare phones
| Global Score | |
| 79 | 77.7 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11, 10 | Android 10 |
| 2020-04-07 | 2020-06-19 |
| 6.53 x 3.02 x 0.35 inches | 6.44 x 2.96 x 0.35 inches |
| 7.37 ounces | 6.77 ounces |
| Aurora blue, Glacier white and Interstellar grey | Black, Blue, Red and White |
| Glass (Corning Gorilla Glass 5) | -- |
| Scratch-Resistant Glass | -- |
| $ 249.00 | -- |
| Display / Screen | |
| 6.7 inches | 6.5 inches |
| 2400 x 1080 pixels | 1600 x 720 pixels |
| IPS LCD | TFT |
| 393 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 720G SM7125 chipset | Samsung Exynos 850 chipset |
| Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 4 GB RAM | 3 GB RAM |
| Adreno 618 GPU | Mali-G76 GPU |
| 9.27 | 9.09 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.74 | 9.84 |
| Camera | |
| 48.00 MP + 16.00 MP | 48.00 MP + 13.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.5 inches (1/2") 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 (960 fps) (HD) slow motion video | -- |
| 11.55 | 10.78 |
| 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 HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 5020mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
Comparison review
The Xiaomi Redmi Note 9S is just a bit better than Samsung Galaxy A21s, getting a 79 score against 77.7. Xiaomi Redmi Note 9S's construction has the same thickness than Samsung Galaxy A21s, but it is just a bit heavier. Both phones in our current comparison have Android OS (operating system), but the Xiaomi Redmi Note 9S has newer 11 version while Samsung Galaxy A21s has Android 10 version, offering some extra features.
The Xiaomi Redmi Note 9S features a more vivid display than Galaxy A21s, because it has a quite larger display, a lot higher 1080 x 2400 resolution and a better pixels density. Xiaomi Redmi Note 9S features a quite bigger memory capacity to store more games and applications than Galaxy A21s, and although they both have a SD memory slot that supports up to 512 GB, the Xiaomi Redmi Note 9S also has 32 GB more internal memory capacity.
Xiaomi Redmi Note 9S has just a little better hardware performance than Samsung Galaxy A21s, and although they both have 8 cpu cores, the Xiaomi Redmi Note 9S also has more RAM. The Xiaomi Redmi Note 9S takes just a bit better photos and videos than Galaxy A21s, and although they both have a 48 mega pixels resolution back-facing camera and the same sensor size, the Xiaomi Redmi Note 9S also has a way better 3840x2160 (4K) video quality and a bigger aperture.
The Galaxy A21s and Xiaomi Redmi Note 9S count with extremely similar batteries duration, although the Galaxy A21s has a 0% smaller battery capacity.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.