Phone Comparison - Microsoft Lumia 640 LTE vs Samsung Galaxy J7 vs Oppo R7
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| Price Comparison (India) | - | - | |
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| Manufacturer | Microsoft | Samsung | Oppo |
| Announced | March 2015 | June 2015 | May 2015 |
| Status | Available - April 2015 | Available - June 2015 | Available - May 2015 |
| Price | Rs. 7,999 ($117.63) [Similarly Priced] | Rs. 13,400 ($197.06) [Similarly Priced] | Rs. 17,990 ($264.56) [Similarly Priced] |
| Colors | Yes | White, Black | Golden, Silver |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) |
152.4 x 78.6 x 7.5 mm (6 x 3.09 x 0.3 in) |
143 x 71 x 6.3 mm (5.63 x 2.8 x 0.25 in) |
| Weight | 145 g (5.11 oz) | 171 g (6.03 oz) | 147 g (5.19 oz) |
| 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 |
| 3G Network | HSDPA 850 / 900 / 2100 | HSDPA 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 - Global, Taiwan HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - USA |
| 4G Network | LTE | LTE | LTE band 1(2100), 3(1800), 7(2600), 8(900), 40(2300) - Global LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 28(700), 40(2300) - Taiwan LTE band 1(2100), 3(1800), 4(1700/2100), 7(2600), 17(700), 20(800) - USA |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail |
| Build Features | - | - | Support for Gloved and Wet Touch Input |
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| OS | Microsoft Windows Phone 8.1 with Lumia Denim | Android OS, v5.1 (Lollipop) | Android OS, v5.1 (Lollipop) |
| Processor | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Octa-core 1.2 GHz, Exynos 7580 | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 |
| GPU | Adreno 305 | Mali-T720 | Adreno 405 |
| RAM | 1 GB | 1.5 GB | 3 GB |
| Internal Memory | 8 GB | 16 GB | 16 GB |
| External Memory | microSD, up to 128 GB | microSD, up to 128 GB | microSD, up to 128 GB (uses SIM 2 slot) |
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| Type | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display | Super AMOLED Capacitive Touchscreen | AMOLED Capacitive Touchscreen, Corning Gorilla Glass 3 |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.0 inches | 5.5 inches | 5.0 inches |
| Resolution | 720 x 1280 pixels (294 ppi) | 720 x 1280 pixels (267 ppi) | 1080 x 1920 pixels (445 ppi) |
| Screen-to-Body Ratio | 67.43% | 69.63% | 66.54% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio with 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, 4128 x 3096 pixels | 13 MP, 4128 x 3096 pixels, Schneider-Kreuznach O |
| Flash | LED flash | LED flash | LED Flash |
| Features | Auto focus, 1/4'' Sensor Size | Auto focus, Geo-tagging, Touch Focus, Beauty Face, Continuous Shots, Sensor Size: 1/3.06-inch, F1.9, Interval Shot, Panorama, Sports Mode, Sound and Shot Mode | Phase Detection Auto-focus, Geo-tagging, Touch Focus, Face Detection, Colorful Night, Slow Shutter, Expert Mode, Beautify, Ultra HD, Panorama, Audio Photo, GIF, Double Exposure, Super Macro, RAW, HDR, Gorgeous Color Filters, Blurred Background, Fast Lens, |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 1 MP, 720p [Similar] | 5 MP [Similar] | 8 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 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA, LTE Cat4 150/50 Mbps |
| Bluetooth | v4.0, A2DP | v4.1, A2DP | v4.0 |
| 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 v2.0, USB Host |
| GPS | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 8 GB, 1 GB RAM | 16 GB, 1.5 GB RAM | 16 GB, 3 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSD, up to 128 GB | microSD, up to 128 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 | Li-Ion Battery | Non-removable Li-Po Battery |
| Capacity | 2500 mAh | 3000 mAh | 2320 mAh |
| Stand by | Up to 864 h (2G) Up to 864 h (3G) |
Up to 354 h | - |
| Talk Time | Up to 26 h 30 min (2G) Up to 17 h 30 min (3G) |
Up to 18 h (3G) | - |
Rs. 14,249 
Rs. 14,190 
