Compare phones
| Global Score | |
| 84.1 | 81.6 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 10 |
| 2020-03-23 | 2020-09-08 |
| 6.26 x 2.96 x 0.35 inches | 6.51 x 3.02 x 0.37 inches |
| 6.63 ounces | 7.58 ounces |
| Midnight blue and Raven black | Cobalt blue and Shadow gray |
| Plastic and Plastic | Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.7 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 403 pixels per inch | 393 pixels per inch |
| 420 cd/m2 brightness | 450 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 8.4 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 732G SM7150-AC chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 470, 64-bit, 8 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Adreno 618 GPU |
| 9.27 | 9.36 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 256 GB) external memory slot |
| 11.74 | 10.78 |
| Camera | |
| 48.00 MP + 20.00 MP | 64.00 MP + 20.00 MP |
| f/2.00 aperture | f/1.90 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.59 inches (1/1.7") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (960 fps) (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 | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 5160mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 6.88 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1 |
| GPS | GPS |
| -- | NFC |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy M21 is slightly better than the Xiaomi Poco X3 NFC, getting a overall score of 84.1 against 81.6. Both phones in our current comparison work with Android operating system, but the Galaxy M21 has a newer 11 version while Xiaomi Poco X3 NFC has Android 10, so it gives you some extra features. Although Galaxy M21 and the Xiaomi Poco X3 NFC were released with only a few months difference, Galaxy M21 is lighter and a bit thinner.
The Xiaomi Poco X3 NFC features a bit better hardware performance than Galaxy M21, and although they both have a Octa-Core CPU, the Xiaomi Poco X3 NFC also has more RAM memory. Xiaomi Poco X3 NFC features a display that is just as good as Galaxy M21's display, because although the Xiaomi Poco X3 NFC has a little bit worse screen density, it also counts with a little larger screen, a little bit more brightness and a bit higher 1080 x 2400 resolution.
The Xiaomi Poco X3 NFC captures slightly better photos and videos than Galaxy M21, and although they both have the same 3840x2160 (4K) video quality and the same video frame rates, the Xiaomi Poco X3 NFC also has a larger sensor which offers a better photo and video quality, a bigger aperture for better images and video in low-light situations and a much more megapixels back-facing camera.
The Galaxy M21 features a slightly bigger memory capacity to install applications and games than Xiaomi Poco X3 NFC, and although they both have equal internal memory capacity, the Galaxy M21 also has an external memory card slot that admits up to 512 GB. The Samsung Galaxy M21 counts with just a little better battery life than Xiaomi Poco X3 NFC, because it has 6000mAh of battery capacity.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.