Phone Comparison - Nokia Lumia 638 vs Yu Yureka vs Microsoft Lumia 640 LTE
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| Manufacturer | Nokia | YU | Microsoft |
| Announced | December 2014 | December 2014 | March 2015 |
| Status | Available - December 2014 | Available - January 2015 | Available - April 2015 |
| Price | Rs. 7,999 ($117.63) [Similarly Priced] | Rs. 9,399 ($138.22) [Similarly Priced] | Rs. 7,999 ($117.63) [Similarly Priced] |
| Colors | Black | Black, White | Yes |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
129.5 x 66.7 x 9.2 mm (5.1 x 2.63 x 0.36 in) |
154.8 x 78 x 6-8.8 mm (6.09 x 3.07 x 0.24-0.35 in) |
141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in) |
| Weight | 136 g (4.8 oz) | 155 g (5.47 oz) | 145 g (5.11 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1700 / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE 1800 / 1900 / 2100 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41) | LTE 700 / 800 / 900 / 1700 / 1800 / 2100 / 2600 TD-LTE 2300 (Bands 1, 3, 4, 7, 8, 17, 20, 28, 40) | LTE |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail | SMS, MMS, Push Mail, EMail, IM |
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| OS | Microsoft Windows Phone 8.1 | Android OS, v4.4.4 (KitKat) | Microsoft Windows Phone 8.1 with Lumia Denim |
| Processor | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 |
| GPU | Adreno 305 | Adreno 405 | Adreno 305 |
| RAM | 1 GB | 2 GB | 1 GB |
| Internal Memory | 8 GB | 16 GB | 8 GB |
| External Memory | microSD, up to 128 GB | microSD, up to 32 GB | microSD, up to 128 GB |
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| Type | IPS LCD capacitive touchscreen, Corning Gorilla Glass 3, ClearBlack Display | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3 | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.5 inches | 5.5 inches | 5.0 inches |
| Resolution | 480 x 854 pixels (218 ppi) | 720 x 1280 pixels (267 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 64.43% | 69.08% | 67.43% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | Yes | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592 х 1944 pixels | 13 MP, 4128 x 3096 pixels | 8 MP, 3264 x 2448 pixels |
| Flash | No | LED flash | LED flash |
| Features | Auto focus, 1/4 | Auto focus, Sony IMX135 Sensor, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR | Auto focus, 1/4'' Sensor Size |
| Video | Yes | 1080p@60fps, 720p@120fps | 1080p@30fps |
| Front Camera | No [Similar] | 5 MP [Similar] | 1 MP, 720p [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 | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Bluetooth | v4.0, A2DP, LE/ apt-X after WP8 Denim update | v4.0 | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, DLNA, hotspot |
| USB | microUSB v2.0 | microUSB v2.0, USB Host | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, Beidou |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 8 GB, 1 GB RAM | 16 GB, 2 GB RAM | 8 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSD, up to 32 GB | microSD, up to 128 GB |
| 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 (BL-5H) | Li-Po Battery | Li-Ion Battery |
| Capacity | 1830 mAh | 2500 mAh | 2500 mAh |
| Stand by | - | Up to 210 h | Up to 864 h (2G) Up to 864 h (3G) |
| Talk Time | - | Up to 8 h | Up to 26 h 30 min (2G) Up to 17 h 30 min (3G) |
