| Global Score | |
| 77.7 | 79.8 |
| Basic Information | |
| Samsung | Sony |
| Android 10 | Android 5.1 |
| 2020-06-19 | 2015-09-02 |
| 6.44 x 2.96 x 0.35 inches | 6.08 x 2.99 x 0.31 inches |
| 6.77 ounces | 6.35 ounces |
| Black, Blue, Red and White | Black, Gold and Gray |
| -- | Glass and Metal |
| -- | Scratch-Resistant Glass |
| -- | $ 545.00 |
| Display / Screen | |
| 6.5 inches | 5.5 inches |
| 1600 x 720 pixels | 2160 x 3840 pixels (4K) |
| TFT | IPS LCD |
| 270 pixels per inch | 801 pixels per inch |
| No touch screen | Capacitive, Multi-touch |
| 7.2 | 10.6 |
| Performance | |
| Samsung Exynos 850 chipset | Qualcomm Snapdragon 810 MSM8994 chipset |
| Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor | ARM Cortex-A57 and ARM Cortex-A53, 64-bit (Octa-Core 2000 MHz) processor |
| 3 GB RAM | 3 GB (1600 MHz) RAM |
| Mali-G76 GPU | Adreno 430 (450 MHz) GPU |
| 9.09 | 9.36 |
| Storage | |
| 32 GB internal memory | 32 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSD, microSDHC, microSDXC (up to 200 GB) external memory slot |
| 9.84 | 8.56 |
| Camera | |
| 48.00 MP + 13.00 MP | 23.00 MP + 5.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.43 inches (1/2.3") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (60 fps) (HD) slow motion video |
| 10.78 | 10.56 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), HSPA+ (4G), HSDPA, HSUPA, EDGE, GPRS and GSM |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 7.1 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 3430mAh Li-Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | 630 hours standby time 15.2 hours talk time |
| 6.8 | 5.44 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 4.1 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | -- |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Xperia Z5 Premium has an overall score of 79.8, which is a little bit better than the Samsung Galaxy A21s's global score of 77.7. These phones use Android OS (operating system), but the Xperia Z5 Premium has the previous 5.1 version and Samsung Galaxy A21s has Android 10 version. The Xperia Z5 Premium construction is somewhat thinner and just a bit lighter than the Samsung Galaxy A21s, despite of the fact that it was released 5 years before.
The Sony Xperia Z5 Premium counts with a bit more powerful processor than Galaxy A21s, and although they both have the same number of cores and the same RAM memory amount, the Sony Xperia Z5 Premium also has a GPU. Xperia Z5 Premium counts with a lot better looking screen than Samsung Galaxy A21s, because although it has a little bit smaller display, it also counts with a much better 3840 x 2160 pixels resolution and a way higher display pixel density.
Galaxy A21s features just a bit better camera than Sony Xperia Z5 Premium, because although it has a smaller camera aperture which is not nice for low-light captures and video, and they both have the same 30 frames per second video frame rates and the same 1920x1080 (Full HD) video definition, the Galaxy A21s also counts with a bigger back camera sensor and a back facing camera with a much higher resolution.
The Samsung Galaxy A21s has a greater memory to store more apps and games than Xperia Z5 Premium, and although they both have equal 32 GB internal memory, the Samsung Galaxy A21s also has a SD extension slot that holds a maximum of 512 GB. Samsung Galaxy A21s features a much better battery duration than Xperia Z5 Premium, because it has 5000mAh of battery capacity.
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