Compare phones
| Global Score | |
| 85.5 | 82.2 |
| Basic Information | |
| Samsung | Sony |
| Android 11, 10 | -- |
| 2019-12-27 | 2018-07-30 |
| 6.24 x 2.90 x 0.31 inches | 6.22 x 3.15 x 0.47 inches |
| 6.07 ounces | 8.32 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white | 16 777 216 |
| Plastic and Plastic | Aluminum and Glass |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 282.00 | $ 1000.00 |
| Display / Screen | |
| 6.5 inches | 5.8 inches |
| 2400 x 1080 pixels | 3840 x 2160 pixels (4K) |
| Super AMOLED | IPS LCD |
| 405 pixels per inch | 760 pixels per inch |
| -- | 900 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 10.4 |
| Performance | |
| Samsung Exynos 9611 chipset | Qualcomm Snapdragon 845 SDM845 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Adreno 630 GPU |
| 9.27 | 9.63 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 400 GB) external memory slot |
| 14.14 | 11.34 |
| Camera | |
| 48.00 MP + 32.00 MP | 19.00 MP + 13.00 MP |
| f/2.00 aperture | f/1.80 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 |
| 1280 x 720 (240 fps) (HD) slow motion video | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 11.55 | 10.45 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 3540mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 5.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Galaxy A51 has an overall score of 85.5, which is slightly better than Sony Xperia XZ2 Premium's 82.2 overall score. Galaxy A51 is a newer phone, and it's also noticeably thinner and noticeably lighter than the Sony Xperia XZ2 Premium. The Xperia XZ2 Premium counts with a way better looking display than Samsung Galaxy A51, because although it has a quite smaller screen, it also counts with a much higher display pixel density and a way better 2160 x 3840px resolution.
The Galaxy A51 has a lot bigger memory for games and applications than Sony Xperia XZ2 Premium, because it has a slot for an external memory card that allows up to 512 GB and 128 GB internal memory capacity. The Xperia XZ2 Premium counts with a little bit better hardware performance than Samsung Galaxy A51, and although they both have a Octa-Core CPU, the Xperia XZ2 Premium also has more RAM.
The Samsung Galaxy A51 counts with a superior camera than Xperia XZ2 Premium, because although it has a smaller aperture which is worse for low light photography and video, and they both have the same 3840x2160 video resolution and the same video frame rate, the Samsung Galaxy A51 also counts with a larger sensor shooting higher quality photos and a way higher resolution camera in the back.
The Samsung Galaxy A51 counts with just a bit better battery duration than Xperia XZ2 Premium, because it has 4000mAh of battery capacity.
Even being the best phone of the ones in this comparison, the Samsung Galaxy A51 is also a bargain compared to the other devices, which makes this phone an obvious call.
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