Compare phones
| Global Score | |
| 76.1 | 80.6 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 10 | Android 14 |
| 2020-06-29 | 2024-10-29 |
| 6.61 x 3.02 x 0.32 inches | 6.00 x 2.80 x 0.32 inches |
| 6.81 ounces | 6.67 ounces |
| Black | -- |
| Plastic and Plastic | Glass |
| $ 194.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 1600 x 720 pixels | 2670 x 1200 pixels |
| IPS LCD | OLED |
| 270 pixels per inch | 457 pixels per inch |
| -- | 3200 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.3 | 10.2 |
| Performance | |
| Mediatek Helio P35 chipset | Snapdragon 8 Elite SM8750-AB (3 nm) chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | processor |
| 3 GB RAM | 12 GB RAM |
| PowerVR GE8320 GPU | Adreno 830 GPU |
| 9.27 | 6.21 |
| Storage | |
| 32 GB internal memory | 256 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 9.84 | 13.3 |
| Camera | |
| 16.00 MP + 13.00 MP | 50.00 MP + 32.00 MP |
| f/1.80 aperture | f/1.60 aperture |
| -- | 23.00mm focal length |
| 0.33 inches (1/3.06") sensor | -- |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (30 fps) video resolution |
| -- | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 9.35 | 12.1 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G |
| Nano SIM | Nano SIM |
| 6.7 | 7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 5400mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 7.12 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.4 |
| GPS | GPS |
| NFC | NFC |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass and Gyroscope |
| FM Radio | -- |
Comparison review
Xiaomi 15 has a global score of 80.6, which is slightly better than the Samsung Galaxy A21's general score of 76.1. Xiaomi 15 is a a bit lighter cellphone than Samsung Galaxy A21, but both are equally thin. Both phones in this comparison include Android OS (operating system), but the Xiaomi 15 has a newer 14 version and Samsung Galaxy A21 has Android 10, so it counts with lots of additional features.
The Xiaomi 15 counts with a way better looking screen than Samsung Galaxy A21, because although it has a little bit smaller display, it also counts with a much higher resolution of 1200 x 2670 and a much greater screen pixels density. The Samsung Galaxy A21 counts with an extremely better CPU than Xiaomi 15, although it has a lower amount of RAM, they both have the same number of cores.
Xiaomi 15 has a much better camera than Galaxy A21, because it has a lot more MP camera in the back, a bigger diafragm aperture and a lot higher 7680x4320 video definition. The Xiaomi 15 has a superior memory capacity for applications and games than Galaxy A21, because although it has no external memory card slot, it also counts with 256 GB internal memory.
Xiaomi 15 counts with a way better battery lifetime than Galaxy A21, because it has 5400mAh of battery capacity against 4000mAh.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.