Phone Comparison - Microsoft Lumia 640 XL LTE Dual SIM vs Xiaomi Redmi 2 Prime vs Micromax Bolt Q338
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| Manufacturer | Microsoft | Xiaomi | Micromax |
| Announced | March 2015 | August 2015 | September 2015 |
| Status | Available - April 2015 | Available - August 2015 | Available - September 2015 |
| Price | Rs. 14,999 ($220.57) [Similarly Priced] | Rs. 6,999 ($102.93) [Similarly Priced] | Rs. 6,590 ($96.91) [Similarly Priced] |
| Colors | Matte cyan, Orange, Black, Matte white, Glossy white | Black, White | Various |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
157.9 x 81.5 x 9 mm (6.22 x 3.21 x 0.35 in) |
134 x 67.2 x 9.4 mm (5.28 x 2.65 x 0.37 in) |
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| Weight | 171 g (6.03 oz) | 133 g (4.69 oz) | - |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (optional) |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 900 / 2100 | HSDPA 900 / 2100 |
| 4G Network | LTE | LTE | - |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Microsoft Windows Phone 8.1 with Lumia Denim | Android OS, v4.4.4 (KitKat) | Android OS, v5.1 (Lollipop) |
| Processor | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 | Quad-core 1.3 GHz, Mediatek MT6580 |
| GPU | Adreno 305 | Adreno 306 | - |
| RAM | 1 GB | 2 GB | 1 GB |
| Internal Memory | 8 GB | 16 GB (13.78 GB for Apps and Phone Storage) | 8 GB (4.7 GB for apps and mass storage) |
| External Memory | microSD, up to 128 GB | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display | IPS LCD capacitive touchscreen | IPS LCD Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.7 inches | 4.7 inches | 5.0 inches |
| Resolution | 720 x 1280 pixels (259 ppi) | 720 x 1280 pixels (312 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 68.88% | 67.83% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4128 x 3096 pixels | 8 MP, 3264 x 2448 pixels | 8 MP, 3264 x 2448 pixels |
| Flash | LED Flash | LED flash | LED flash |
| Features | Carl Zeiss Optics, 1/3'' sensor size | Auto focus, 1.4 µm Pixel Size, BSI Sensor, Geo-tagging, Touch Focus, Face/smile Detection, HDR | Auto focus, Yes |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 5 MP, 1080p [Similar] | 2 MP, 720p [Similar] | 5 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA, LTE Cat4 150/50 Mbps | HSPA 21/5.76 Mbps |
| Bluetooth | v4.0, A2DP | v4.0, A2DP, LE | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | microUSB v2.0 | microUSB v2.0, USB Host | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 8 GB, 1 GB RAM | 16 GB (13.78 GB for Apps and Phone Storage), 2 GB RAM | 8 GB (4.7 GB for apps and mass storage), 1 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSD, up to 32 GB | microSD, up to 32 GB |
| USB OTG | - | Supported | - |
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| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| NFC | |
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| Type | Li-Ion Battery | Li-Po Battery | Li-Ion Battery |
| Capacity | 3000 mAh | 2200 mAh | 2000 mAh |
| Stand by | Up to 936 h (2G) Up to 936 h (3G) |
- | Up to 360 h |
| Talk Time | Up to 31 h 20 min (2G) Up to 23 h 40 min (3G) |
- | Up to 7 h 30 min |
