Phone Comparison - Nokia Lumia 638 vs Microsoft Lumia 435 Dual SIM vs Microsoft Lumia 532
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| Manufacturer | Nokia | Microsoft | Microsoft |
| Announced | December 2014 | January 2015 | January 2015 |
| Status | Available - December 2014 | Available - February 2015 | Available - February 2015 |
| Price | Rs. 7,999 ($117.63) [Similarly Priced] | Rs. 5,300 ($77.94) [Similarly Priced] | Rs. 6,450 ($94.85) [Similarly Priced] |
| Colors | Black | Black, White, Green, Orange | Black, White, Green, Orange |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
129.5 x 66.7 x 9.2 mm (5.1 x 2.63 x 0.36 in) |
118.1 x 64.7 x 11.7 mm (4.65 x 2.55 x 0.46 in) |
118.9 x 65.5 x 11.6 mm (4.68 x 2.58 x 0.46 in) |
| Weight | 136 g (4.8 oz) | 134.1 g (4.73.0.04 oz) | 136.3 g (4.8.0.11 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE 1800 / 1900 / 2100 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41) | - | - |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Microsoft Windows Phone 8.1 | Microsoft Windows Phone 8.1 | Microsoft Windows Phone 8.1 |
| Processor | Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 | Dual-core 1.2 GHz Cortex-A7, Qualcomm MSM8210 Snapdragon 200 | Quad-core 1.2 GHz Cortex-A7, Qualcomm MSM8212 Snapdragon 200 |
| GPU | Adreno 305 | Adreno 302 | Adreno 302 |
| RAM | 1 GB | 1 GB | 1 GB |
| Internal Memory | 8 GB | 8 GB | 8 GB |
| External Memory | microSD, up to 128 GB | microSD, up to 128 GB | microSD, up to 128 GB |
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| Type | IPS LCD capacitive touchscreen, Corning Gorilla Glass 3, ClearBlack Display | Capacitive touchscreen | Capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.5 inches | 4.0 inches | 4.0 inches |
| Resolution | 480 x 854 pixels (218 ppi) | 480 x 800 pixels (233 ppi) | 480 x 800 pixels (233 ppi) |
| Screen-to-Body Ratio | 64.43% | 59.72% | 58.60% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio with RDS | FM radio with RDS |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592 х 1944 pixels | 2 MP, 1600 x 1200 pixels | 5 MP, 2592 х 1944 pixels |
| Flash | No | No | No |
| Features | Auto focus, 1/4 | Geo-tagging | Geo-tagging |
| Video | Yes | 480p@30fps | 480p@30fps |
| Front Camera | No [Similar] | VGA, 480p [Similar] | VGA, 480p [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 42.2/5.76 Mbps |
| Bluetooth | v4.0, A2DP, LE/ apt-X after WP8 Denim update | v4.0, A2DP | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, hotspot | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 b/g/n, hotspot |
| USB | microUSB v2.0 | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS, GLONASS | A-GPS, GLONASS | A-GPS, GLONASS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 8 GB, 1 GB RAM | 8 GB, 1 GB RAM | 8 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSD, up to 128 GB | microSD, up to 128 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) | Li-Ion Battery | Li-Ion Battery |
| Capacity | 1830 mAh | 1560 mAh | 1560 mAh |
| Stand by | - | Up to 504 h (2G) Up to 504 h (3G) |
Up to 528 h (2G) Up to 528 h (3G) |
| Talk Time | - | Up to 21 h (2G) Up to 11 h 45 min (3G) |
Up to 21 h (2G) Up to 12 h (3G) |
