Phone Comparison - Microsoft Lumia 640 LTE vs Nokia 6 vs Nokia 3
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| Manufacturer | Microsoft | Nokia | Nokia |
| Announced | March 2015 | January 2017 | February 2017 |
| Status | Available - April 2015 | Available - May 2017 | Available - May 2017 |
| Price | Rs. 7,999 ($117.63) [Similarly Priced] | Rs. 14,999 ($245.00) [Similarly Priced] | Rs. 9,499 ($147.00) [Similarly Priced] |
| Colors | Yes | Black, Silver | Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) |
154 x 75.8 x 8.4 mm (6.06 x 2.98 x 0.33 in) |
143.4 x 71.4 x 8.5 mm (5.65 x 2.81 x 0.33 in) |
| Weight | 145 g (5.11 oz) | 169 g (5.96 oz) | - |
| SIM Type | - | Dual-SIM | Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO & TD-SCDMA |
| 3G Network | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE | LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) | LTE band 1(2100), 3(1800), 5(850), 38(2600), 39(1900), 40(2300), 41(2500) |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | - | - Fingerprint Sensor - Metal Build - Dual Speakers - Dolby Technology Dolby Atmos |
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| Notification LED | - | Yes | Yes |
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| OS | Microsoft Windows Phone 8.1 with Lumia Denim | Android OS, v7.1 (Nougat) | Android OS, v7.1 (Nougat) |
| Processor | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Octa-core 1.4 GHz Cortex-A53, Qualcomm MSM8937 Snapdragon 430 | Quad-core 1.3 GHz Cortex-A53, MediaTek MT6737 |
| GPU | Adreno 305 | Adreno 505 | Mali-T720 MP2 |
| RAM | 1 GB | 4 GB | 2 GB |
| Internal Memory | 8 GB | 64 GB | 16 GB |
| External Memory | microSD, up to 128 GB | microSD, up to 128 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, Gorilla Glass 3, 2.5D Curved Glass | IPS LCD Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.0 inches | 5.5 inches | 5.0 inches |
| Resolution | 720 x 1280 pixels (294 ppi) | 1080 x 1920 pixels (401 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 67.43% | 71.27% | 67.18% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | Stereo FM Radio with Recording | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264 x 2448 pixels | 16 MP | 8 MP |
| Flash | LED flash | Dual-LED (Dual Tone) | LED Flash |
| Features | Auto focus, 1/4'' Sensor Size | Phase Detection Autofocus, f/2.0 Aperture, 1.0um Sensor, Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama, Time Lapse, Slow Motion | Autofocus, f/2.0, 1.12µm, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 1 MP, 720p [Similar] | 8 MP, 1080p, 1.12um Sensor, f/2.0 Aperture, Large Wide-angle 84˚ [Similar] | 8 MP, f/2.0, 1.12µm [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, VoLTE | HSPA, LTE, VoLTE |
| Bluetooth | v4.0, A2DP | v4.1, A2DP, LE | Yes |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot | Yes |
| USB | microUSB v2.0 | microUSB v2.0, USB Host, Fast Charging | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 8 GB, 1 GB RAM | 64 GB, 4 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSD, up to 128 GB | microSD, up to 32 GB |
| USB OTG | - | Supported | 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 | Li-Ion Battery |
| Capacity | 2500 mAh | 3000 mAh | 2650 mAh |
| Stand by | Up to 864 h (2G) Up to 864 h (3G) |
Up to 768 h (3G) | - |
| Talk Time | Up to 26 h 30 min (2G) Up to 17 h 30 min (3G) |
Up to 18 h (3G) | - |
