Compare phones
| Global Score | |
| 60.8 | 67.1 |
| Basic Information | |
| Microsoft | Xiaomi |
| Windows 10 Mobile | Android 6.0 Marshmallow |
| 2015-10-06 | 2016-11-07 |
| 5.36 x 2.67 x 0.39 inches | 5.56 x 2.74 x 0.35 inches |
| 5.01 ounces | 5.50 ounces |
| Black and White | 16 777 216 |
| Plastic | Metal |
| $ 185.00 | $ 104.00 |
| Display / Screen | |
| 4.7 inches | 5 inches |
| 720 x 1280 pixels (HD) | 1280 x 720 pixels (HD) |
| LCD | IPS LCD |
| 312 pixels per inch | 294 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 8.2 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 210 8909 chipset | Qualcomm Snapdragon 430 8937 chipset |
| ARM Cortex-A7 (Single-Core 1100 MHz) processor | ARM Cortex-A53, 64-bit (Octa-Core 1400 MHz) processor |
| 1 GB RAM | 2 GB RAM |
| Adreno 304 GPU | Adreno 505 GPU |
| 7.56 | 8.55 |
| Storage | |
| 8 GB internal memory | 16 GB internal memory |
| microSD, microSDHC, microSDXC (up to 200 GB) external memory slot | microSDXC (up to 128 GB) external memory slot |
| 6.06 | 6.72 |
| Camera | |
| 5.00 MP + 2.00 MP | 13.00 MP + 5.00 MP |
| f/2.40 aperture | f/2.20 aperture |
| 28.00mm focal length | -- |
| 0.25 inches (1/4") sensor | -- |
| 1280 x 720 (30 fps) (HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 7.7 | 8.8 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSUPA, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G) and HSPA |
| Nano SIM | Micro SIM |
| 7 | 6.1 |
| Battery Life | |
| 2100mAh Battery | 4100mAh Li - Ion Battery |
| Removable Battery | Non-Removable Battery |
| 672 hours standby time 16 hours talk time | -- |
| 4 | 6 |
| Other Features | |
| Bluetooth 4.1 | Bluetooth 4.1 |
| GPS | GPS |
| -- | Fingerprint ID Scanner |
| Accelerometer, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Xiaomi Redmi 4 has a general score of 67.1, which is much better than Lumia 550's general score of 60.8. The Xiaomi Redmi 4 has Android 6.0 Marshmallow OS, while Lumia 550 works with Windows 10 Mobile OS. The Xiaomi Redmi 4 body is newer and thinner, but just a bit heavier than the Lumia 550. Xiaomi Redmi 4 features a better processing unit than Lumia 550, because it has a higher number of cores (and also faster) and more RAM.
Microsoft Lumia 550 counts with a brighter display than Xiaomi Redmi 4, because although it has a quite smaller display, and they both have the same exact 1280 x 720px resolution, the Microsoft Lumia 550 also counts with a bit higher pixel number per display inch. The Xiaomi Redmi 4 features more storage for games and applications than Microsoft Lumia 550, because although it has a SD memory slot that admits 72 GB smaller, it also counts with 8 GB more internal memory capacity.
The Xiaomi Redmi 4 features a better camera than Microsoft Lumia 550, because it has a bigger diafragm aperture to take better low light captures, a much better 1920x1080 video resolution and a back facing camera with a lot better 13 MP resolution. Xiaomi Redmi 4 features a very superior battery performance than Microsoft Lumia 550, because it has 4100mAh of battery capacity.
The Xiaomi Redmi 4 not only is the best devices in our comparison, but it's also a lot cheaper.
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