| Global Score | |
| 71.9 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Windows Phone 8 | Android 11, 10 |
| 2014-04-04 | 2020-03-23 |
| 5.42 x 2.75 x 0.33 inches | 6.26 x 2.96 x 0.35 inches |
| 4.79 ounces | 6.63 ounces |
| Gray | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 249.00 | -- |
| Display / Screen | |
| 5 inches | 6.4 inches |
| 1080 x 1920 pixels (Full HD) | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 441 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| Capacitive, Multi-touch | No touch screen |
| 9.1 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 800 chipset | Exynos 9611 chipset |
| Quad-Core 2300 MHz processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 2 GB RAM | 4 GB RAM |
| Adreno 330 (450 MHz) GPU | Mali-G72 MP3 GPU |
| 9.27 | 9.27 |
| Storage | |
| 16 GB internal memory | 64 GB internal memory |
| microSD, microSDHC, microSDXC (up to 64 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 6.16 | 11.74 |
| Camera | |
| 13.00 MP + 2.00 MP | 48.00 MP + 20.00 MP |
| -- | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 1920 x 1080 (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 6.93 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), UMTS, EV-DO A, EDGE, GPRS, GSM and CDMA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 2600mAh Li-Ion Battery | 6000mAh Li - Polymer Battery |
| Removable Battery | Non-Removable Battery |
| 480 hours standby time 20 hours talk time | -- |
| 4.56 | 7.52 |
| Other Features | |
| Bluetooth 3.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| -- | Fingerprint ID Scanner |
| Accelerometer, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
The Samsung Galaxy M21 has an overall score of 84.1, which is much better than Samsung ATIV SE's 71.9 general score. Although the Samsung Galaxy M21 is a lot newer than Samsung ATIV SE, it is notably heavier and just a little thicker. Samsung Galaxy M21 comes with Android 11 OS, while Samsung ATIV SE counts with Windows Phone 8 OS.
The Samsung Galaxy M21's processor is just as good as the Samsung ATIV SE one, because although the Samsung Galaxy M21 has doesn't have an extra GPU, it also counts with 2 GB more RAM and a larger number of 2.3 GHz cores. Samsung ATIV SE counts with a slightly better display than Galaxy M21, because although it has a much smaller display and a quite lower resolution of 1920 x 1080, it also counts with a just a bit greater number of pixels in each screen inch.
Samsung Galaxy M21 features a lot bigger storage capacity for apps and games than Samsung ATIV SE, because it has an external SD slot that holds a maximum of 512 GB and more internal memory. The Samsung Galaxy M21 takes a lot better photographs and videos than Samsung ATIV SE, because it has a way better video resolution and a camera with way more mega pixels.
The Galaxy M21 has a way better battery life than Samsung ATIV SE, because it has a 131 percent larger battery size.
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