Phone Comparison - Nokia Lumia 638 vs Samsung Galaxy E7 vs HTC Desire 626
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| Manufacturer | Nokia | Samsung | HTC |
| Announced | December 2014 | January 2015 | February 2015 |
| Status | Available - December 2014 | Available - Feburary 2015 | Coming Soon - February 2015 |
| Price | Rs. 7,999 ($117.63) [Similarly Priced] | Rs. 17,400 ($255.88) [Similarly Priced] | Rs. 10,090 ($148.38) [Similarly Priced] |
| Colors | Black | Black, White, Blue | - |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
129.5 x 66.7 x 9.2 mm (5.1 x 2.63 x 0.36 in) |
151.4 x 77.2 x 7.3 mm (5.96 x 3.04 x 0.29 in) |
146.9 x 70.9 x 8.19 mm (5.78 x 2.79 x 0.32 in ) |
| Weight | 136 g (4.8 oz) | 141 g (4.97 oz) | 140 g (4.94 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (optional) | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE 1800 / 1900 / 2100 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41) | - | LTE 700 / 850 / 900 / 1800 / 2100 / 2600 (Bands 1, 3, 5, 7, 8, 28) |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Microsoft Windows Phone 8.1 | Android OS, v4.4.4 (KitKat) | Android OS, v4.4.4 (KitKat) |
| Processor | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 | Octa-core 1.7 GHz Cortex-A53 Quad-core 1.2 GHz Cortex-A53, Mediatek MT6752 Qualcomm Snapdragon 410 |
| GPU | Adreno 305 | Adreno 306 | Mali-T760MP2 Adreno 306 |
| RAM | 1 GB | 2 GB | 1/2 GB |
| Internal Memory | 8 GB | 16 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 | Super AMOLED capacitive touchscreen | IPS LCD Capacitive Touchscreen |
| 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% | 71.36% | 66.05% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | 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 | 13 MP, 4128 x 3096 pixels |
| Flash | No | LED flash | LED flash |
| Features | Auto focus, 1/4 | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama | Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama |
| Video | Yes | 1080p@30fps | 1080p@30fps |
| Front Camera | No [Similar] | 5 MP [Similar] | 5 MP, 1080p [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 | HSPA, LTE |
| Bluetooth | v4.0, A2DP, LE/ apt-X after WP8 Denim update | v4.0, A2DP | v4.0, A2DP, apt-X |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, hotspot | Yes | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot |
| USB | microUSB v2.0 | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS | Yes, with A-GPS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 8 GB, 1 GB RAM | 16 GB, 2 GB RAM | 16 GB, 1/2 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSD, up to 128 GB | microSD, up to 32 GB |
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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) | Non-removable Li-Ion Battery | Li-Ion Battery |
| Capacity | 1830 mAh | 2950 mAh | 2000 mAh |
| Stand by | - | - | Up to 800 h (2G) Up to 761 h (3G) |
| Talk Time | - | Up to 19 h (3G) | Up to 20 h 30 min (2G) Up to 30 h (3G) |
