Compare phones
| Global Score | |
| 59.8 | 65.8 |
| Basic Information | |
| Nokia | Xiaomi |
| Windows Phone 8 | Android 6.0 Marshmallow |
| 2012-09-05 | 2016-11-11 |
| 4.87 x 2.70 x 0.39 inches | 5.51 x 2.77 x 0.33 inches |
| 5.64 ounces | 4.64 ounces |
| Black, Blue, Gray, Purple, Red, White and Yellow | 16 777 216 |
| -- | Metal |
| $ 209.00 | $ 104.00 |
| Display / Screen | |
| 4.3 inches | 5 inches |
| 480 x 800 pixels | 1280 x 720 pixels (HD) |
| AMOLED | IPS LCD |
| 217 pixels per inch | 294 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 7.6 | 7.2 |
| Performance | |
| Qualcomm Snapdragon S4 Plus MSM8960 chipset | Qualcomm Snapdragon 425 8917 chipset |
| Krait (Dual-Core 1500 MHz) processor | ARM Cortex-A53, 64-bit, 28 nm (Quad-Core 1400 MHz) processor |
| 1 GB (500 MHz) RAM | 2 GB RAM |
| Adreno 225 (400 MHz) GPU | Adreno 308 GPU |
| 8.37 | 8.28 |
| Storage | |
| 8 GB internal memory | 16 GB internal memory |
| microSD, microSDHC, microSDXC (up to 64 GB) external memory slot | microSDXC (up to 128 GB) external memory slot |
| 5.06 | 6.72 |
| Camera | |
| 8.00 MP + 0.30 MP | 13.00 MP + 5.00 MP |
| f/2.20 aperture | f/2.20 aperture |
| 28.00mm focal length | -- |
| 0.31 inches (1/3.2") sensor | -- |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 8.25 | 8.8 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, UMTS, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G) and HSPA |
| Micro SIM | Micro SIM |
| 6.9 | 6.1 |
| Battery Life | |
| 1650mAh Li-Ion Battery | 3120mAh Li - Ion Battery |
| Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 360 hours standby time 15.4 hours talk time | -- |
| 3.52 | 5.12 |
| Other Features | |
| Bluetooth 3.0 | Bluetooth 4.1 |
| GPS | GPS |
| NFC | -- |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Xiaomi Redmi 4a is a bit better than the Lumia 820, with a global score of 65.8 against 59.8. The Xiaomi Redmi 4a design is a lot newer, somewhat lighter and somewhat thinner than the Lumia 820. Xiaomi Redmi 4a counts with Android 6.0 Marshmallow operating system, and Lumia 820 has Windows Phone 8 operating system.
Lumia 820 counts with a bit better processor than Xiaomi Redmi 4a, because although it has a lower amount of RAM memory and an inferior number of cores , it also counts with an extra graphics processor. Lumia 820 features a little sharper display than Xiaomi Redmi 4a, although it has a much lower pixel amount per inch of screen, a way worse 800 x 480px resolution and a little smaller screen.
Xiaomi Redmi 4a has a lot bigger memory capacity to install applications and games or saving photos and videos than Lumia 820, because it has a SD card slot that supports a maximum of 128 GB and 16 GB internal storage capacity. The Xiaomi Redmi 4a captures just a bit better videos and photos than Lumia 820, and although they both have the same (Full HD) video definition, the same 30 fps video frame rate and a same size camera aperture, the Xiaomi Redmi 4a also has a camera in the back with lot more MP.
Xiaomi Redmi 4a has a very superior battery duration than Lumia 820, because it has an 89% more battery capacity.
The Xiaomi Redmi 4a is not only the best phones of the ones we are comparing here, but it's also a bargain compared to the other ones, making it a great choice.
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