Compare phones
| Global Score | |
| 80.6 | 84.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 14 | Android 11, 10 |
| 2024-10-29 | 2020-03-23 |
| 6.00 x 2.80 x 0.32 inches | 6.26 x 2.96 x 0.35 inches |
| 6.67 ounces | 6.63 ounces |
| -- | Midnight blue and Raven black |
| Glass | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 2670 x 1200 pixels | 2340 x 1080 pixels |
| OLED | Super AMOLED |
| 457 pixels per inch | 403 pixels per inch |
| 3200 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 10.2 | 8.4 |
| Performance | |
| Snapdragon 8 Elite SM8750-AB (3 nm) chipset | Exynos 9611 chipset |
| processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 12 GB RAM | 4 GB RAM |
| Adreno 830 GPU | Mali-G72 MP3 GPU |
| 6.21 | 9.27 |
| Storage | |
| 256 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 13.3 | 11.74 |
| Camera | |
| 50.00 MP + 32.00 MP | 48.00 MP + 20.00 MP |
| f/1.60 aperture | f/2.00 aperture |
| 23.00mm focal length | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 7680 x 4320 (30 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (960 fps) (Full HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 12.1 | 11.55 |
| 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, Dual SIM |
| 7 | 6.7 |
| Battery Life | |
| 5400mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 7.12 | 7.52 |
| Other Features | |
| Bluetooth 5.4 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass and Gyroscope | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Galaxy M21 is just a bit better than Xiaomi 15, having a score of 84.1 against 80.6. Despite of the fact the Galaxy M21 is way older and just a bit thicker than Xiaomi 15, it's body is still a little lighter. Both phones in this comparison review include Android operating system, but Galaxy M21 has older 11 version while Xiaomi 15 has Android 14.
The Xiaomi 15 features a lot better screen than Galaxy M21, and although they both have a screen of the same size, the Xiaomi 15 also has a bit higher 1200 x 2670px resolution, way more display brightness and a just a bit higher pixels quantity per display inch. The Galaxy M21 features a way better hardware performance than Xiaomi 15, although it has a smaller amount of RAM, they both have 8 CPU cores.
The Xiaomi 15 features a slightly better camera than Samsung Galaxy M21, because it has a larger camera aperture to capture better photography and videos in low-light situations, a lot better video quality and a camera in the back with more MP. Xiaomi 15 counts with a bigger memory capacity to store more apps and games than Galaxy M21, because although it has no external memory card slot, it also counts with 256 GB internal memory.
The Samsung Galaxy M21 features just a bit better battery duration than Xiaomi 15, because it has 6000mAh of battery capacity against 5400mAh.
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