Phone Comparison - Nokia Lumia 830 vs Microsoft Lumia 640 LTE vs Microsoft Lumia 650
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| Manufacturer | Nokia | Microsoft | Microsoft |
| Announced | September 2014 | March 2015 | February 2016 |
| Status | Available - September 2014 | Available - April 2015 | Available - April 2016 |
| Price | - | Rs. 7,999 ($117.63) [Similarly Priced] | Rs. 9,999 ($147.04) [Similarly Priced] |
| Colors | Orange, green, white, black | Yes | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
139.4 x 70.7 x 8.5 mm (5.49 x 2.78 x 0.33 in) |
141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) |
142 x 70.9 x 6.9 mm (5.59 x 2.79 x 0.27 in) |
| Weight | 150 g (5.29 oz) | 145 g (5.11 oz) | 122 g (4.3 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE 800 / 900 / 1800 / 2100 / 2600 | LTE | LTE band 1(2100), 3(1800), 7(2600), 8(900), 20(800) |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
| Build Features | ClearBlack display | - | - |
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| OS | Microsoft Windows Phone 8.1 | Microsoft Windows Phone 8.1 with Lumia Denim | Microsoft Windows 10 |
| Processor | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Quad-core 1.3 GHz Cortex-A7, Qualcomm Snapdragon 212 |
| GPU | Adreno 305 | Adreno 305 | Adreno 304 |
| RAM | 1 GB | 1 GB | 1 GB |
| Internal Memory | 16 GB | 8 GB | 16 GB |
| External Memory | microSD, up to 128 GB | microSD, up to 128 GB | microSD, up to 200 GB (dedicated slot) |
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| Type | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3 | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display | AMOLED 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 (297 ppi) |
| Screen-to-Body Ratio | 69.80% | 67.43% | 66.95% |
| 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 | 10 MP, Carl Zeiss Optics | 8 MP, 3264 x 2448 pixels | 8 MP, f/2.2 |
| Flash | LED Flash | LED flash | 28mm |
| Features | Auto focus, OIS, 1/3.4'' sensor size, PureView technology, geo-tagging, face detection, panorama | Auto focus, 1/4'' Sensor Size | 1/4" Sensor Size |
| Video | 1080p@30fps, optical stabilization, stereo sound rec. | 1080p@30fps | 720p@30fps |
| Front Camera | 0.9 MP, 720p [Similar] | 1 MP, 720p [Similar] | 5 MP, f/2.2, 720p video [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Up to 296 kbps | Yes | 296.0/236.8 Kbps |
| 3G | HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Bluetooth | v4.0, A2DP | v4.0, A2DP | v4.1, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, DLNA, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, DLNA, hotspot | Wi-Fi 802.11 b/g/n, DLNA, hotspot |
| USB | microUSB v2.0 | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS, GLONASS, BDS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 16 GB, 1 GB RAM | 8 GB, 1 GB RAM | 16 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSD, up to 128 GB | microSD, up to 200 GB (dedicated slot) |
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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 (BV-L4A) | Li-Ion Battery | Removable Li-Ion Battery |
| Capacity | 2200 mAh | 2500 mAh | 2000 mAh |
| Stand by | Up to 528 h | Up to 864 h (2G) Up to 864 h (3G) |
Up to 624 h (3G) |
| Talk Time | Up to 12 h 54 min (2G) Up to 14 h 48 min (3G) |
Up to 26 h 30 min (2G) Up to 17 h 30 min (3G) |
Up to 16 h (2G) Up to 13 h (3G) |
