Phone Comparison - Microsoft Lumia 640 LTE vs alcatel Idol 3 (4.7) vs Samsung Galaxy J2 Prime
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| Manufacturer | Microsoft | alcatel | Samsung |
| Announced | March 2015 | March 2015 | November 2016 |
| Status | Available - April 2015 | Available - June 2015 | Available - November 2016 |
| Price | Rs. 7,999 ($117.63) [Similarly Priced] | - | Rs. 8,490 ($140.15) [Similarly Priced] |
| Colors | Yes | Various | Black, Gold |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) |
134.6 x 65.9 x 7.6 mm (5.3 x 2.59 x 0.3 in) |
144.8 x 72.1 x 8.9 mm (5.7 x 2.84 x 0.35 in) |
| Weight | 145 g (5.11 oz) | 110 g (3.88 oz) | 160 g (5.64 oz) |
| SIM Type | - | - | Single SIM (Micro-SIM), Dual SIM (Micro-SIM, dual stand-by) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G Network | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 - EMEA HSDPA 850 / 1700(AWS) / 1900 / 2100 - USA |
HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE | LTE band 1(2100), 3(1800), 7(2600), 8(900), 20(800) - EMEA | LTE |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM |
| Notification LED | - | - | No |
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| OS | Microsoft Windows Phone 8.1 with Lumia Denim | Android OS, v5.0.2 (Lollipop) | Android OS, v6.0 (Marshmallow) |
| Processor | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 | Quad-core 1.4 GHz Cortex-A53, Mediatek MT6737T |
| GPU | Adreno 305 | Adreno 306 | Mali-T720MP2 |
| RAM | 1 GB | 1.5 GB | 1.5 GB |
| Internal Memory | 8 GB | 8 GB | 8 GB |
| External Memory | microSD, up to 128 GB | microSD, up to 256 GB (dedicated slot) - single-SIM model | microSD, up to 256 GB (dedicated slot) |
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| Type | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display | IPS LCD capacitive touchscreen | Super AMOLED Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.0 inches | 4.7 inches | 5.0 inches |
| Resolution | 720 x 1280 pixels (294 ppi) | 720 x 1280 pixels (312 ppi) | 540 x 960 pixels (220 ppi) |
| Screen-to-Body Ratio | 67.43% | 68.86% | 66.19% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio, RDS | FM radio, RDS, recording |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264 x 2448 pixels | 13 MP, f/2.0 | 8 MP |
| Flash | LED flash | LED flash | LED Flash |
| Features | Auto focus, 1/4'' Sensor Size | Auto focus, 1/3" Sensor Size, 1.12 µm Pixel Size, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | Autofocus, Geo-tagging, Touch Focus, Face Detection |
| Video | 1080p@30fps | 1080p@30fps | 720p@30fps |
| Front Camera | 1 MP, 720p [Similar] | 5 MP, 1080p [Similar] | 5 MP, LED flash [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 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 | v4.2, 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, USB Host | microUSB v2.0, USB On-The-Go |
| GPS | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS | Yes, with A-GPS |
| Browser | HTML5 | HTML | HTML |
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| Internal | 8 GB, 1 GB RAM | 8 GB, 1.5 GB RAM/ 16 GB, 1.5 GB RAM (Dual SIM model) | 8 GB, 1.5 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSD, up to 256 GB (dedicated slot) - single-SIM model | microSD, up to 256 GB (dedicated slot) |
| 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-Ion Battery | Removable Li-Ion Battery |
| Capacity | 2500 mAh | 2000 mAh | 2600 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) |
- | - |
