Compare phones
| Global Score | |
| 84.1 | 80.6 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 14 |
| 2020-03-23 | 2024-10-29 |
| 6.26 x 2.96 x 0.35 inches | 6.00 x 2.80 x 0.32 inches |
| 6.63 ounces | 6.67 ounces |
| Midnight blue and Raven black | -- |
| Plastic and Plastic | Glass |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 2340 x 1080 pixels | 2670 x 1200 pixels |
| Super AMOLED | OLED |
| 403 pixels per inch | 457 pixels per inch |
| 420 cd/m2 brightness | 3200 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 10.2 |
| Performance | |
| Exynos 9611 chipset | Snapdragon 8 Elite SM8750-AB (3 nm) chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | processor |
| 4 GB RAM | 12 GB RAM |
| Mali-G72 MP3 GPU | Adreno 830 GPU |
| 9.27 | 6.21 |
| Storage | |
| 64 GB internal memory | 256 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 13.3 |
| Camera | |
| 48.00 MP + 20.00 MP | 50.00 MP + 32.00 MP |
| f/2.00 aperture | f/1.60 aperture |
| 26.00mm focal length | 23.00mm focal length |
| 0.5 inches (1/2") sensor | -- |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (30 fps) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 11.55 | 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, Dual SIM | Nano SIM |
| 6.7 | 7 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 5400mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 7.12 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.4 |
| GPS | GPS |
| -- | NFC |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Barometer, Compass and Gyroscope |
| FM Radio | -- |
Comparison review
The Galaxy M21 has a general score of 84.1, which is just a bit better than the Xiaomi 15's general score of 80.6. These phones come with Android OS (Operating System), but the Galaxy M21 has 11 version and Xiaomi 15 has Android 14. Galaxy M21 is a older and a little bit thicker cellphone than the Xiaomi 15, but Samsung was able to make it a little bit lighter anyway.
Xiaomi 15 counts with an incredibly better display than Galaxy M21, and although they both have a screen of the same size, the Xiaomi 15 also has a bit better screen pixels density, much more brightness and a little bit higher resolution of 1200 x 2670. The Samsung Galaxy M21 features a lot better performance than Xiaomi 15, although it has less RAM, they both have 8 cores.
Xiaomi 15 counts with a better storage capacity for applications, games, photos and videos than Samsung Galaxy M21, because although it has no slot for external memory cards, it also counts with 256 GB internal storage capacity. The Xiaomi 15 counts with just a bit better camera than Galaxy M21, because it has a better resolution back-facing camera, a much better 7680x4320 video definition and a bigger aperture to capture better low-light captures and videos.
Samsung Galaxy M21 has just a bit longer battery duration than Xiaomi 15, because it has a 6000mAh battery size instead of 5400mAh.
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