| Global Score | |
| 77.3 | 91.8 |
| Basic Information | |
| Sony | Samsung |
| Android 4.4.4 | Android 11 |
| 2014-09-03 | 2021-01-29 |
| 5.85 x 2.89 x 0.35 inches | 5.97 x 2.80 x 0.31 inches |
| 6.02 ounces | 6.03 ounces |
| Black and White | Gray, Phantom pink, Violet and White |
| -- | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 170.00 | $ 722.00 |
| Display / Screen | |
| 5.2 inches | 6.2 inches |
| 1080 x 1920 pixels (Full HD) | 2400 x 1080 pixels |
| IPS LCD | Dynamic AMOLED |
| 424 pixels per inch | 424 pixels per inch |
| 592 cd/m2 brightness | 1300 cd/m2 brightness |
| Capacitive, Multi-touch | No touch screen |
| 9.6 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 801 8974-AC chipset | Qualcomm Snapdragon 888 chipset |
| Krait 400 (Quad-Core 2500 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 3 GB (933 MHz) RAM | 8 GB RAM |
| Adreno 330 (450 MHz) GPU | Adreno 660 GPU |
| 9.45 | 9.63 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSD, microSDHC, microSDXC (up to 128 GB) external memory slot | No SD card slot |
| 8.12 | 10.1 |
| Camera | |
| 20.70 MP + 2.20 MP | 12.00 MP + 10.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 25.00mm focal length | 26.00mm focal length |
| 0.43 inches (1/2.3") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 10.34 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSUPA, EDGE, GPRS and GSM | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 7 | 10.7 |
| Battery Life | |
| 3200mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | 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, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
The Galaxy S21 is better than Xperia Z3, having a overall score of 91.8 against 77.3. Even though the Galaxy S21 is a bit heavier than the Xperia Z3, it's somewhat thinner and notably newer. Both of these phones come with Android OS (Operating System), but Galaxy S21 has the older 11 version while Xperia Z3 has Android 4.4.4.
The Sony Xperia Z3 features a little sharper display than Samsung Galaxy S21, although it has a quite smaller display, a lot darker display and a little bit lower resolution of 1920 x 1080, they both have the same screen pixel density. The Samsung Galaxy S21 has a much bigger storage capacity for applications, games, photos and videos than Xperia Z3, because although it has no slot for an external memory card, it also counts with more internal memory.
Galaxy S21 features a little faster CPU than Sony Xperia Z3, because although it has doesn't have an extra GPU, it also counts with a greater number of faster cores and a greater amount of RAM memory. The Galaxy S21 takes just a bit better photographs and videos than Sony Xperia Z3, because although it has a camera in the back with lot less MP, it also counts with a much better video definition, a much larger back-facing camera sensor providing a lot higher image quality and a bigger camera aperture to take better images in poorly lited situations.
Galaxy S21 counts with superior battery duration than Sony Xperia Z3, because it has a 4000mAh battery capacity instead of 3200mAh.
Although Samsung Galaxy S21 is a better device, it costs a lot more money than the Sony Xperia Z3, and it doesn't have such a good relation between it's price and quality as the Sony Xperia Z3. If you prefer to save some dollars, you can buy Sony Xperia Z3, and give up some specs and features, but you will get the most out of your savings.
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