Compare phones
| Global Score | |
| 80.6 | 76.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 14 | Android 10 |
| 2024-10-29 | 2020-06-29 |
| 6.00 x 2.80 x 0.32 inches | 6.61 x 3.02 x 0.32 inches |
| 6.67 ounces | 6.81 ounces |
| -- | Black |
| Glass | Plastic and Plastic |
| -- | $ 194.00 |
| Display / Screen | |
| 6.4 inches | 6.5 inches |
| 2670 x 1200 pixels | 1600 x 720 pixels |
| OLED | IPS LCD |
| 457 pixels per inch | 270 pixels per inch |
| 3200 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 10.2 | 7.3 |
| Performance | |
| Snapdragon 8 Elite SM8750-AB (3 nm) chipset | Mediatek Helio P35 chipset |
| processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 12 GB RAM | 3 GB RAM |
| Adreno 830 GPU | PowerVR GE8320 GPU |
| 6.21 | 9.27 |
| Storage | |
| 256 GB internal memory | 32 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 13.3 | 9.84 |
| Camera | |
| 50.00 MP + 32.00 MP | 16.00 MP + 13.00 MP |
| f/1.60 aperture | f/1.80 aperture |
| 23.00mm focal length | -- |
| -- | 0.33 inches (1/3.06") sensor |
| 7680 x 4320 (30 fps) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (960 fps) (Full HD) slow motion video | -- |
| 12.1 | 9.35 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 7 | 6.7 |
| Battery Life | |
| 5400mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 7.12 | 5.92 |
| Other Features | |
| Bluetooth 5.4 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass and Gyroscope | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Xiaomi 15 has a general score of 80.6, which is just a bit better than the Galaxy A21's overall score of 76.1. Both of these devices have Android OS (operating system), but the Xiaomi 15 has 14 version and Galaxy A21 has Android 10, giving a couple nice extra features and optimized performance. Xiaomi 15's design has the same thickness than Galaxy A21, but it's just a little lighter.
The Samsung Galaxy A21 counts with a much faster processor than Xiaomi 15, although it has a smaller amount of RAM memory, they both have the same number of cores. The Xiaomi 15 counts with a much more vibrant display than Galaxy A21, because although it has a little smaller screen, it also counts with a lot higher amount of pixels per inch in the display and a way higher 1200 x 2670 resolution.
The Xiaomi 15 shoots much clearer photographs and videos than Galaxy A21, because it has a back camera with way more mega-pixels, a bigger aperture to capture better images in low-light environments and a lot higher 7680x4320 video definition. The Xiaomi 15 features a superior memory capacity for games and applications than Galaxy A21, because although it has no SD memory slot, it also counts with 224 GB more internal memory.
The Xiaomi 15 counts with a superior battery lifetime than Galaxy A21, because it has a 35 percent more battery size.
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