| Global Score | |
| 74.8 | 85.5 |
| Basic Information | |
| Samsung | Samsung |
| Android 4.4.2, 4.3, 4.1.2, 4.1.1 | Android 11, 10 |
| 2012-08-29 | 2019-12-27 |
| 5.94 x 3.17 x 0.37 inches | 6.24 x 2.90 x 0.31 inches |
| 6.44 ounces | 6.07 ounces |
| Blue, Pink and White | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| -- | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| $ 215.00 | $ 282.00 |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 720 x 1280 pixels (HD) | 2400 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 267 pixels per inch | 405 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 8 | 8.1 |
| Performance | |
| Samsung Exynos 4 (4412) chipset | Samsung Exynos 9611 chipset |
| ARM Cortex-A9 (Quad-Core 1600 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 2 GB RAM | 4 GB RAM |
| ARM Mali-400 MP4 (Quad-Core 266 MHz) GPU | Mali-G72 MP3 GPU |
| 9.18 | 9.27 |
| Storage | |
| 64 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 |
| 9.46 | 14.14 |
| Camera | |
| 8.00 MP + 1.90 MP | 48.00 MP + 32.00 MP |
| -- | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (240 fps) (HD) slow motion video |
| 7.48 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSPA, HSUPA, UMTS, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| SIM | Nano SIM, Dual SIM |
| 7 | 6.7 |
| Battery Life | |
| 3100mAh Li-Ion Battery | 4000mAh Li - Polymer Battery |
| Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 980 hours standby time 35 hours talk time | -- |
| 5.12 | 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, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Galaxy A51 is much better than the Samsung Galaxy Note II, with an 85.5 score against 74.8. Both phones in this review have Android operating system, but the Galaxy A51 has an older 11 version and Samsung Galaxy Note II has Android 4.4.2. The Galaxy A51 construction is a lot newer, thinner and just a little lighter than the Samsung Galaxy Note II.
The Galaxy A51 counts with a bit better display than Samsung Galaxy Note II, because it has a larger display, a lot higher 1080 x 2400 pixels resolution and a lot better pixel density. The Galaxy A51 features a bit faster processing unit than Samsung Galaxy Note II, because although it has doesn't have an additional GPU, it also counts with a higher number of cores and 2 GB more RAM.
Samsung Galaxy A51 has a much greater memory capacity for games and applications than Samsung Galaxy Note II, because it has a SD card slot that admits a maximum of 512 GB and 128 GB internal storage capacity. The Samsung Galaxy A51 takes way better photos and videos than Galaxy Note II, because it has a lot better 3840x2160 (4K) video definition and a back facing camera with lot more mega-pixels.
The Galaxy A51 counts with better battery duration than Samsung Galaxy Note II, because it has a 4000mAh battery capacity.
Samsung Galaxy A51 costs more than Samsung Galaxy Note II, but you can get a better phone for that few extra dollars.
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