Compare phones
| Global Score | |
| 65.6 | 71.8 |
| Basic Information | |
| Microsoft | Xiaomi |
| Windows Phone 8.1 | Android 6.0 Marshmallow |
| 0000-00-00 | 2017-02-14 |
| 6.22 x 3.21 x 0.35 inches | 5.94 x 2.99 x 0.33 inches |
| 6.03 ounces | 5.82 ounces |
| Black, Blue, Orange and White | 16 777 216 |
| -- | Metal |
| Scratch-Resistant Glass | -- |
| $ 140.00 | $ 145.00 |
| Display / Screen | |
| 5.7 inches | 5.5 inches |
| 720 x 1280 pixels (HD) | 1920 x 1080 pixels (Full HD) |
| IPS LCD | IPS LCD |
| 258 pixels per inch | 401 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 7.9 | 8 |
| Performance | |
| Qualcomm Snapdragon 400 chipset | Qualcomm Snapdragon 625 8953 chipset |
| Quad-Core 1200 MHz processor | ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 2000 MHz) processor |
| 1 GB RAM | 3 GB RAM |
| Adreno 305 (450 MHz) GPU | Adreno 506 GPU |
| 8.37 | 9.09 |
| Storage | |
| 8 GB internal memory | 32 GB internal memory |
| microSD, microSDHC, microSDXC (up to 128 GB) external memory slot | microSDXC (up to 128 GB) external memory slot |
| 5.62 | 8.12 |
| Camera | |
| 13.00 MP + 5.00 MP | 13.00 MP + 5.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| 28.00mm focal length | -- |
| 0.33 inches (1/3") sensor | -- |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| -- | 1280 x 720 (120 fps) (HD) slow motion video |
| 9.02 | 9.02 |
| 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) and HSPA |
| Micro SIM | Micro SIM |
| 7 | 6.1 |
| Battery Life | |
| 3000mAh Battery | 4100mAh Li - Polymer Battery |
| Removable Battery | Non-Removable Battery |
| 888 hours standby time 30.3 hours talk time | -- |
| 4.96 | 6 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 4.2 |
| GPS | GPS |
| NFC | -- |
| -- | Infra-red port |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
Xiaomi Redmi Note 4X is slightly better than the Lumia 640 XL, getting a score of 71.8 against 65.6. The Xiaomi Redmi Note 4X is a a bit lighter and a bit thinner device than the Lumia 640 XL. The Xiaomi Redmi Note 4X comes with Android 6.0 Marshmallow OS, while Lumia 640 XL comes with Windows Phone 8.1 OS.
The Xiaomi Redmi Note 4X has a bit sharper screen than Lumia 640 XL, because although it has a bit smaller display, it also counts with a lot better display pixels density and a lot higher resolution of 1080 x 1920px. Xiaomi Redmi Note 4X has just a bit better performance than Lumia 640 XL, because although it has doesn't have an additional graphics processor, it also counts with a greater amount of RAM memory and a higher number of cores (and also faster).
Xiaomi Redmi Note 4X features a lot bigger storage to install applications and games than Microsoft Lumia 640 XL, and although they both have a SD memory slot that holds up to 128 GB, the Xiaomi Redmi Note 4X also has 24 GB more internal memory capacity. Xiaomi Redmi Note 4X counts with a way better battery performance than Microsoft Lumia 640 XL, because it has 4100mAh of battery capacity.
The Xiaomi Redmi Note 4X has a camera that's very similar to the camera in Microsoft Lumia 640 XL, both of them have the same (Full HD) video resolution, a same resolution back facing camera, a F2 diafragm aperture and the same video frame rate.
Xiaomi Redmi Note 4X costs a bit more than the Lumia 640 XL, but you can get a better phone for that few extra dollars.
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