| Global Score | |
| 84.1 | 77.3 |
| Basic Information | |
| Samsung | Sony |
| Android 11, 10 | Android 4.4.4 |
| 2020-03-23 | 2014-09-03 |
| 6.26 x 2.96 x 0.35 inches | 5.85 x 2.89 x 0.35 inches |
| 6.63 ounces | 6.02 ounces |
| Midnight blue and Raven black | Black and White |
| Plastic and Plastic | -- |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 170.00 |
| Display / Screen | |
| 6.4 inches | 5.2 inches |
| 2340 x 1080 pixels | 1080 x 1920 pixels (Full HD) |
| Super AMOLED | IPS LCD |
| 403 pixels per inch | 424 pixels per inch |
| 420 cd/m2 brightness | 592 cd/m2 brightness |
| No touch screen | Capacitive, Multi-touch |
| 8.4 | 9.6 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 801 8974-AC chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Krait 400 (Quad-Core 2500 MHz) processor |
| 4 GB RAM | 3 GB (933 MHz) RAM |
| Mali-G72 MP3 GPU | Adreno 330 (450 MHz) GPU |
| 9.27 | 9.45 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSD, microSDHC, microSDXC (up to 128 GB) external memory slot |
| 11.74 | 8.12 |
| Camera | |
| 48.00 MP + 20.00 MP | 20.70 MP + 2.20 MP |
| f/2.00 aperture | f/2.00 aperture |
| 26.00mm focal length | 25.00mm focal length |
| 0.5 inches (1/2") sensor | 0.43 inches (1/2.3") 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 (120 fps) (HD) slow motion video |
| 11.55 | 10.34 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE (4G), HSPA+ (4G), HSDPA, HSUPA, EDGE, GPRS and GSM |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 7 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 3200mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| -- | 920 hours standby time 21 hours talk time |
| 7.52 | 5.2 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 4.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | -- |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
The Galaxy M21 is a little bit better than the Xperia Z3, with an 84.1 score against 77.3. Galaxy M21's construction has the same thickness than the Xperia Z3, but it is just a little bit heavier. Both of these phones use Android operating system, but the Galaxy M21 has the previous 11 version while Xperia Z3 has Android 4.4.4 version.
The Xperia Z3 features a bit better hardware performance than Galaxy M21, because although it has 1 GB lesser RAM memory and an inferior number of cores , it also counts with an extra GPU. The Xperia Z3 counts with a much better screen than Galaxy M21, because although it has a little bit smaller screen and a bit lower 1920 x 1080 resolution, it also counts with a little greater pixels density and more brightness.
The Galaxy M21 has a much bigger memory to install applications and games or saving photos and videos than Xperia Z3, because it has an external SD slot that supports up to 512 GB and 64 GB internal memory capacity. Samsung Galaxy M21 has a much longer battery duration than Sony Xperia Z3, because it has an 88 percent bigger battery capacity.
Galaxy M21 counts with a much better camera than Xperia Z3, and although they both have the same video frame rate, the same video resolution and a same size diafragm aperture, the Galaxy M21 also has a larger camera sensor shooting higher quality videos and photos and a much better 48 mega-pixels resolution back-facing camera.
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