Compare phones
| Global Score | |
| 73 | 84.1 |
| Basic Information | |
| Sony | Samsung |
| Android 4.4.2 | Android 11, 10 |
| -- | 2020-03-23 |
| 5.39 x 2.83 x 0.43 inches | 6.26 x 2.96 x 0.35 inches |
| 5.75 ounces | 6.63 ounces |
| Black, Blue and White | 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 |
| IPS LCD | 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 801 8974-AB chipset | Exynos 9611 chipset |
| Krait 400 (Quad-Core 2300 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 3 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 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 6.72 | 11.74 |
| Camera | |
| 20.70 MP + 0.30 MP | 48.00 MP + 20.00 MP |
| -- | f/2.00 aperture |
| -- | 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 |
| 9.24 | 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 |
| Micro SIM | Nano SIM, Dual SIM |
| 7 | 6.7 |
| Battery Life | |
| 3000mAh Li-Ion Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 690 hours standby time 15 hours talk time | -- |
| 4.96 | 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 |
Comparison review
The Galaxy M21 is much better than Sony Xperia Z2a, with a general score of 84.1 against 73. Galaxy M21 is a thinner but heavier device than the Sony Xperia Z2a. Both devices in this comparison review work with Android OS (operating system), but the Galaxy M21 has older 11 version and Sony Xperia Z2a has Android 4.4.2 version.
The Xperia Z2a features a bit more vivid screen than Samsung Galaxy M21, because although it has a really smaller display and a bit lower 1920 x 1080 resolution, it also counts with a quite greater number of pixels per inch of screen. Galaxy M21 has a much greater storage for games and applications than Xperia Z2a, because it has 48 GB more internal memory capacity and a SD card slot that admits up to 512 GB.
The Samsung Galaxy M21's CPU is very similar to the processor in Sony Xperia Z2a, because although the Samsung Galaxy M21 has doesn't have an additional graphics processing unit, it also counts with 4 more 2.3 GHz CPU cores and a larger amount of RAM memory. Galaxy M21 counts with a really longer battery duration than Sony Xperia Z2a, because it has 6000mAh of battery capacity instead of 3000mAh.
Galaxy M21 takes much clearer photos and videos than Sony Xperia Z2a, and although they both have the same 30 frames per second video frame rate and the same video quality, the Galaxy M21 also has a larger camera sensor taking better quality videos and pictures and a lot better 48 mega pixels resolution back camera.
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