| Global Score | |
| 77.3 | 84.1 |
| Basic Information | |
| Sony | Samsung |
| Android 4.4.4 | Android 11, 10 |
| 2014-09-03 | 2020-03-23 |
| 5.85 x 2.89 x 0.35 inches | 6.26 x 2.96 x 0.35 inches |
| 6.02 ounces | 6.63 ounces |
| Black and White | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 170.00 | -- |
| Display / Screen | |
| 5.2 inches | 6.4 inches |
| 1080 x 1920 pixels (Full HD) | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 424 pixels per inch | 403 pixels per inch |
| 592 cd/m2 brightness | 420 cd/m2 brightness |
| Capacitive, Multi-touch | No touch screen |
| 9.6 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 801 8974-AC chipset | Exynos 9611 chipset |
| Krait 400 (Quad-Core 2500 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 3 GB (933 MHz) RAM | 4 GB RAM |
| Adreno 330 (450 MHz) GPU | Mali-G72 MP3 GPU |
| 9.45 | 9.27 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSD, microSDHC, microSDXC (up to 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.12 | 11.74 |
| Camera | |
| 20.70 MP + 2.20 MP | 48.00 MP + 20.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| 25.00mm focal length | 26.00mm focal length |
| 0.43 inches (1/2.3") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 10.34 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSUPA, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 7 | 6.7 |
| Battery Life | |
| 3200mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 920 hours standby time 21 hours talk time | -- |
| 5.2 | 7.52 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| -- | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
The Galaxy M21 is a little bit better than the Xperia Z3, getting a score of 84.1 against 77.3. Galaxy M21's design has the same thickness than the Xperia Z3, but it is just a little bit heavier. Both devices in our current comparison use Android OS (operating system), but Galaxy M21 has 11 version and Xperia Z3 has Android 4.4.4.
The Xperia Z3 features a much better looking screen than Galaxy M21, because although it has a bit smaller screen and a little lower 1920 x 1080 pixels resolution, it also counts with more brightness and a just a bit more pixels per screen inch. Xperia Z3 counts with just a little better processing power than Galaxy M21, because although it has a lower amount of RAM memory and 4 lesser CPU cores , it also counts with an additional GPU.
Galaxy M21 features a better camera than Sony Xperia Z3, and although they both have the same video frame rate, the same 3840x2160 (4K) video resolution and a F2 camera aperture, the Galaxy M21 also has a larger camera sensor taking better quality photos and videos and a camera with way more MP. Galaxy M21 features a lot bigger memory for games and applications than Sony Xperia Z3, because it has more internal memory and a slot for SD memory cards that admits up to 512 GB.
Galaxy M21 has a superior battery lifetime than Sony Xperia Z3, because it has a 6000mAh battery size against 3200mAh.
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