Compare phones
| Global Score | |
| 90.8 | 85.2 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | -- |
| 2020-04-29 | 2018-11-15 |
| 6.26 x 2.90 x 0.34 inches | 6.40 x 3.03 x 0.31 inches |
| 6.60 ounces | 6.46 ounces |
| Prism cube black | Bubblegum pink, Caviar black and Lemonade blue |
| Aluminum and Plastic | Glass and Metal |
| Scratch-Resistant Glass | -- |
| $ 339.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.3 inches |
| 2400 x 1080 pixels | 2220 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 405 pixels per inch | 392 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8 |
| Performance | |
| Samsung Exynos 980 chipset | Qualcomm Snapdragon 660 SDM660 chipset |
| ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor |
| 6 GB RAM | 6 GB RAM |
| Mali-G76 MP5 GPU | Adreno 512 GPU |
| 9.27 | 9.27 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 1000 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 15.38 | 14.14 |
| Camera | |
| 48.00 MP + 32.00 MP | 24.00 MP + 24.00 MP |
| f/2.00 aperture | f/1.70 aperture |
| 26.00mm focal length | 27.00mm focal length |
| 0.5 inches (1/2") sensor | 0.36 inches (1/2.8") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (480 fps) (HD) slow motion video | -- |
| 11.55 | 10.45 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 4500mAh Li - Polymer Battery | 3800mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.32 | 5.76 |
| 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, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy A51 5G has a global score of 90.8, which is a little bit better than the Galaxy A9 (2018)'s score of 85.2. Galaxy A51 5G's design is newer than the Galaxy A9 (2018)'s, although it's a bit thicker and just a little bit heavier. Samsung Galaxy A51 5G features a bit better screen than Galaxy A9 (2018), because it has a little bit higher quantity of pixels in each screen inch, a bit higher resolution of 1080 x 2400 pixels and a little bit larger display.
Samsung Galaxy A9 (2018) has a CPU that is just as good as the Galaxy A51 5G one, both have a 6 GB RAM and 8 cpu cores. The Galaxy A51 5G shoots much better videos and photos than Samsung Galaxy A9 (2018), because although it has a tinier aperture which is not recommended for low light photos and video, and they both have the same 3840x2160 video quality and the same 30 frames per second video frame rate, the Galaxy A51 5G also counts with a lot bigger sensor which gives a way higher photo and video quality and a much more mega-pixels back camera.
Galaxy A51 5G counts with a slightly better memory for applications and games than Galaxy A9 (2018), and although they both have exactly the same 128 GB internal storage, the Galaxy A51 5G also has a SD memory slot that supports a maximum of 1000 GB. The Samsung Galaxy A51 5G counts with just a little bit longer battery lifetime than Galaxy A9 (2018), because it has an 18% larger battery capacity.
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