| Global Score | |
| 71.7 | 85.5 |
| Basic Information | |
| Samsung | Samsung |
| Android 4.4 | Android 11, 10 |
| 2013-06-05 | 2019-12-27 |
| 5.50 x 2.81 x 0.36 inches | 6.24 x 2.90 x 0.31 inches |
| 5.33 ounces | 6.07 ounces |
| Blue, Gray and Orange | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| -- | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 145.00 | $ 282.00 |
| Display / Screen | |
| 5 inches | 6.5 inches |
| 1080 x 1920 pixels (Full HD) | 2400 x 1080 pixels |
| TFT | Super AMOLED |
| 441 pixels per inch | 405 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 9.1 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 600 APQ8064T chipset | Samsung Exynos 9611 chipset |
| Krait 300 (Quad-Core 1900 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 2 GB RAM | 4 GB RAM |
| Adreno 320 (400 MHz) GPU | Mali-G72 MP3 GPU |
| 8.91 | 9.27 |
| Storage | |
| 16 GB internal memory | 128 GB internal memory |
| microSD, microSDHC, microSDXC (up to 64 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 6.16 | 14.14 |
| Camera | |
| 8.00 MP + 2.00 MP | 48.00 MP + 32.00 MP |
| -- | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 1920 x 1080 (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (240 fps) (HD) slow motion video |
| 6.49 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSUPA, UMTS, 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 | |
| 2600mAh Li-Ion Battery | 4000mAh Li - Polymer Battery |
| Removable Battery | Non-Removable Battery |
| 17 hours talk time | -- |
| 4.56 | 5.92 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | -- |
| -- | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Samsung Galaxy A51 has a global score of 85.5, which is better than Galaxy S4 Active's general score of 71.7. These phones have Android OS (Operating System), but Samsung Galaxy A51 has the newer 11 version while Galaxy S4 Active has Android 4.4 version, offering some additional features and optimized performance. Even though Samsung Galaxy A51 is heavier than Galaxy S4 Active, it's somewhat thinner and extremely newer.
The Samsung Galaxy A51 has a bit more powerful processing unit than Samsung Galaxy S4 Active, because although it has doesn't have an extra graphics processing unit, it also counts with a higher amount of RAM and a larger number of cores (and also faster). Galaxy S4 Active features a more vivid screen than Galaxy A51, because although it has a quite lower 1920 x 1080 resolution and a really smaller display, it also counts with a little bit better pixels quantity per inch in the display.
Galaxy A51 features a lot bigger storage to store more games and applications than Galaxy S4 Active, because it has 128 GB internal storage capacity and a SD memory slot that supports up to 512 GB. Galaxy A51 captures much better photographs and videos than Galaxy S4 Active, because it has a way higher 3840x2160 video definition and a much more mega pixels back camera.
Galaxy A51 features a much better battery lifetime than Galaxy S4 Active, because it has a 54% more battery size.
The Galaxy A51 is way more expensive than Galaxy S4 Active, but you can get a better phone for that few extra dollars.
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