Xiaomi Mi 4
Microsoft Lumia 640 LTEXiaomi Mi 4 vs Microsoft Lumia 640 LTE
General Info
| Manufacturer | |
| Xiaomi | Microsoft |
| Announced | |
| July 2014 | March 2015 |
| Status | |
| Available - Q3 2014 | Available - April 2015 |
| Price | |
| - | Rs. 7,999 ($117.63) [Similarly Priced] |
| Colors | |
| Black, White | Yes |
| Form Factor | |
| Candybar | Candybar |
| Dimension | |
|
139.2 x 68.5 x 8.9 mm (5.48 x 2.7 x 0.35 in) |
141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) |
| Weight | |
| 149 g (5.26 oz) | 145 g (5.11 oz) |
| 2G Network | |
| GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | |
| HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | |
| LTE | LTE |
| Messaging | |
| SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
Hardware and OS
| OS | |
| Android OS, v4.4.3 (KitKat) | Microsoft Windows Phone 8.1 with Lumia Denim |
| Processor | |
| Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801 [Similar] | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 [Similar] |
| GPU | |
| Adreno 330 [Similar] | Adreno 305 [Similar] |
| RAM | |
| 3 GB [Browse Similar] | 1 GB [Browse Similar] |
| Internal Memory | |
| 16/64 GB | 8 GB |
| External Memory | |
| No | microSD, up to 128 GB |
Display
| Type | |
| IPS LCD capacitive touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display |
| Colors | |
| 16M colors | 16M colors |
| Size | |
| 5.0 inches [Similar] | 5.0 inches [Similar] |
| Resolution | |
| 1080 x 1920 pixels (441 ppi) [Similar] | 720 x 1280 pixels (294 ppi) [Similar] |
| Screen-to-Body Ratio | 72.14% | 67.43% |
| Multi-Touch | |
 |
|
Camera
| Rear Camera | |
| 13 MP, 4128 x 3096 pixels [Similar] | 8 MP, 3264 x 2448 pixels [Similar] |
| Flash | |
| Dual-LED Flash | LED flash |
| Features | |
| Auto focus, 1/3' Sensor Size, 1.12µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR | Auto focus, 1/4'' Sensor Size |
| Video | |
| 2160p, 1080p@30fps, HDR | 1080p@30fps |
| Front Camera | |
| 8 MP, 1080p@30fps [Similar] | 1 MP, 720p [Similar] |
Multimedia
| 3.5mm Jack | |
|
|
| Radio | |
| FM radio | FM radio |
| Games | |
| Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
|
|
Connectivity and Data Rate
| GPRS | |
| Yes | Yes |
| Edge | |
| Yes | Yes |
| 3G | |
| DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Bluetooth | |
| v4.0, A2DP | v4.0, A2DP |
| Wi-Fi | |
| Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, DLNA, hotspot |
| USB | |
| microUSB v2.0 (MHL), USB On-the-go | microUSB v2.0 |
| GPS | |
| Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, Beidou |
| Browser | |
| HTML5 | HTML5 |
User Memory
| Internal | |
| 16/64 GB, 3 GB RAM | 8 GB, 1 GB RAM |
| Expandable Storage | |
| No | microSD, up to 128 GB |
| USB OTG | |
| Supported | - |
Sensors
| Fingerprint | |
|
|
| Proximity Sensor | |
|
|
| Accelerometer Sensor | |
|
|
| NFC | |
|
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Battery
| Type | |
| Non-removable Li-Ion Battery | Li-Ion Battery |
| Capacity | |
| 3080 mAh | 2500 mAh |
| Stand by | |
| - | Up to 864 h (2G) Up to 864 h (3G) |
| Talk Time | |
| - | Up to 26 h 30 min (2G) Up to 17 h 30 min (3G) |
