| Global Score | |
| 77.3 | 76.1 |
| Basic Information | |
| Sony | Samsung |
| Android 4.4.4 | Android 10 |
| 2014-09-03 | 2020-06-29 |
| 5.85 x 2.89 x 0.35 inches | 6.61 x 3.02 x 0.32 inches |
| 6.02 ounces | 6.81 ounces |
| Black and White | Black |
| -- | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| $ 170.00 | $ 194.00 |
| Display / Screen | |
| 5.2 inches | 6.5 inches |
| 1080 x 1920 pixels (Full HD) | 1600 x 720 pixels |
| IPS LCD | IPS LCD |
| 424 pixels per inch | 270 pixels per inch |
| 592 cd/m2 brightness | -- |
| Capacitive, Multi-touch | No touch screen |
| 9.6 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 801 8974-AC chipset | Mediatek Helio P35 chipset |
| Krait 400 (Quad-Core 2500 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 3 GB (933 MHz) RAM | 3 GB RAM |
| Adreno 330 (450 MHz) GPU | PowerVR GE8320 GPU |
| 9.45 | 9.27 |
| Storage | |
| 32 GB internal memory | 32 GB internal memory |
| microSD, microSDHC, microSDXC (up to 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.12 | 9.84 |
| Camera | |
| 20.70 MP + 2.20 MP | 16.00 MP + 13.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 25.00mm focal length | -- |
| 0.43 inches (1/2.3") sensor | 0.33 inches (1/3.06") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | -- |
| 10.34 | 9.35 |
| 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 |
| 7 | 6.7 |
| Battery Life | |
| 3200mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 920 hours standby time 21 hours talk time | -- |
| 5.2 | 5.92 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| -- | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Xperia Z3 is slightly better than Samsung Galaxy A21, with a overall score of 77.3 against 76.1. Xperia Z3 is a older and just a little bit thicker phone than the Samsung Galaxy A21, but Sony made it somewhat lighter anyway. Both of these devices use Android OS (Operating System), but Xperia Z3 has 4.4.4 version while Samsung Galaxy A21 has Android 10 version, so it counts with a couple nice extra features and some performance improvements.
Xperia Z3 features a bit superior CPU than Galaxy A21, because although it has lesser processing cores (although they are faster), and they both have the same RAM memory amount, the Xperia Z3 also counts with an additional graphics processor. The Xperia Z3 features a way better looking screen than Galaxy A21, because although it has a much smaller screen, it also counts with a way higher pixels amount per display inch and a higher 1920 x 1080 resolution.
Samsung Galaxy A21 has a much greater memory for games and applications than Sony Xperia Z3, and although they both have equal internal storage capacity, the Samsung Galaxy A21 also has a slot for an external memory card that supports up to 512 GB. The Samsung Galaxy A21 features longer battery duration than Xperia Z3, because it has a 4000mAh battery capacity.
Xperia Z3 counts with a better camera than Galaxy A21, because although it has a tinier diafragm aperture, it also counts with a much better video definition, a way more mega-pixels back-facing camera and a way larger back-facing camera sensor shooting way higher quality videos and pictures.
Xperia Z3 is not only the best devices of the ones we are comparing here, but it's also cheap compared to the other phone, making it a very good choice.
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