Compare phones
| Global Score | |
| 71.8 | 85.5 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 6.0 Marshmallow | Android 11, 10 |
| 2017-02-14 | 2019-12-27 |
| 5.94 x 2.99 x 0.33 inches | 6.24 x 2.90 x 0.31 inches |
| 5.82 ounces | 6.07 ounces |
| 16 777 216 | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Metal | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| $ 145.00 | $ 282.00 |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 2400 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 401 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 8 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 625 8953 chipset | Samsung Exynos 9611 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 2000 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| Adreno 506 GPU | Mali-G72 MP3 GPU |
| 9.09 | 9.27 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.12 | 14.14 |
| Camera | |
| 13.00 MP + 5.00 MP | 48.00 MP + 32.00 MP |
| f/2.00 aperture | 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 (120 fps) (HD) slow motion video | 1280 x 720 (240 fps) (HD) slow motion video |
| 9.02 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G) and HSPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Micro SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 4100mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6 | 5.92 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Samsung Galaxy A51 is better than Xiaomi Redmi Note 4X, getting a general score of 85.5 against 71.8. Samsung Galaxy A51's design is much newer and a little bit thinner, but just a little bit heavier than the Xiaomi Redmi Note 4X. Both of these devices include Android OS, but Samsung Galaxy A51 has an older 11 version while Xiaomi Redmi Note 4X has Android 6.0 Marshmallow.
Samsung Galaxy A51 counts with a bit superior CPU than Xiaomi Redmi Note 4X, and although they both have the same number of cores, the Samsung Galaxy A51 also has 1 GB more RAM. Samsung Galaxy A51 has a little bit better looking screen than Xiaomi Redmi Note 4X, because it has a little bit higher resolution of 1080 x 2400px, a little higher pixels quantity in each screen inch and a larger display.
The Galaxy A51 counts with a lot better camera than Xiaomi Redmi Note 4X, and although they both have a same size aperture, the Galaxy A51 also has a lot higher resolution camera and a much better 3840x2160 video quality. The Galaxy A51 has a lot bigger memory to install applications and games or saving photos and videos than Xiaomi Redmi Note 4X, because it has 128 GB internal storage capacity and a slot for SD memory cards that admits up to 512 GB.
The Xiaomi Redmi Note 4X counts with a bit superior battery performance than Samsung Galaxy A51, because it has a 2 percent bigger battery capacity.
Samsung Galaxy A51 is way more expensive than Xiaomi Redmi Note 4X, but you can get a better phone for that few more dollars.
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