Phone Comparison - Microsoft Lumia 640 Dual SIM vs Huawei Y6 Pro vs Xiaomi Redmi 5a
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| Manufacturer | Microsoft | Huawei | Xiaomi |
| Announced | March 2015 | February 2016 | October 2017 |
| Status | Available - April 2015 | Available - February 2016 | Available - October 2017 |
| Price | Rs. 8,999 ($132.34) [Similarly Priced] | - | Rs. 4,999 ($90.00) [Similarly Priced] |
| Colors | Yes | Gold, White, Gray | Gold, Rose Gold, Gray |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) |
143.1 x 71.8 x 9.7 mm (5.63 x 2.83 x 0.38 in) |
140.4 x 70.1 x 8.4 mm (5.53 x 2.76 x 0.33 in) |
| Weight | 145 g (5.11 oz) | 160 g (5.64 oz) | 137 g (4.83 oz) |
| SIM Type | - | - | Hybrid Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 900 / 2100 - TIT-AL00 HSDPA 850 / 900 / 1900 / 2100 - TIT-U02 |
HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | - | LTE band 1(2100), 3(1800), 38(2600), 39(1900), 40(2300), 41(2500) - TIT-AL00 | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) |
| SAR EU |
- W/kg (head) - W/kg (body) |
0.34 W/kg (head) - W/kg (body) |
- W/kg (head) - W/kg (body) |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Notification LED | - | - | Yes |
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| OS | Microsoft Windows Phone 8.1 with Lumia Denim | Android OS, v5.1.1 (Lollipop) | Android 7.1 (Nougat) |
| Processor | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Quad-core 1.3 GHz Cortex-A53, Mediatek MT6735P | Quad-core 1.4 GHz Cortex-A53, Qualcomm MSM8917 Snapdragon 425 |
| GPU | Adreno 305 | Mali-T720MP2 | Adreno 308 |
| RAM | 1 GB | 2 GB | 2 GB |
| Internal Memory | 8 GB | 16 GB | 16 GB |
| External Memory | microSD, up to 128 GB | microSD, up to 128 GB (dedicated slot) | microSD, up to 256 GB (uses SIM 2 slot) |
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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 | 5.0 inches | 5.0 inches | 5.0 inches |
| Resolution | 720 x 1280 pixels (294 ppi) | 720 x 1280 pixels (294 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 67.43% | 66.95% | 69.89% |
| 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 | 8 MP, 3264 x 2448 pixels | 13 MP, 4128 x 3096 pixels | 13 MP |
| Flash | LED flash | LED Flash | LED Flash |
| Features | Auto focus, 1/4'' Sensor Size | Autofocus, f/2.0, 28mm, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | Autofocus, f/2.2, Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama |
| Video | 1080p@30fps | Yes | 1080p@30fps |
| Front Camera | 1 MP, 720p [Similar] | 5 MP [Similar] | 5 MP, f/2.0 [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps | HSPA, LTE | HSPA, LTE, VoLTE |
| Bluetooth | v4.0, A2DP | v4.0, A2DP, LE | 4.1, A2DP, LE |
| 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 | microUSB 2.0 |
| GPS | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, BDS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 8 GB, 1 GB RAM | 16 GB, 2 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSD, up to 128 GB (dedicated slot) | microSD, up to 256 GB (uses SIM 2 slot) |
| 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 | Non-removable Li-Po Battery | Non-removable Li-Ion Battery |
| Capacity | 2500 mAh | 4000 mAh | 3000 mAh |
| Stand by | Up to 840 h (2G) Up to 840 h (3G) |
- | - |
| Talk Time | Up to 27 h 30 min (2G) Up to 20 h 30 min (3G) |
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