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| Model Name | Nokia Lumia 638 | |
| Announced | 2014, December. Released 2014, December | |
| Status | Discontinued | |
| Network | Technology | GSM / HSPA / LTE |
| 2G | GSM 850 / 900 / 1800 / 1900 | |
| 3G | 0 | |
| 4G | 3, 7, 38, 39, 40, 41 | |
| Network Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | |
| Body | Size | 129.5 x 66.7 x 9.2 mm (5.10 x 2.63 x 0.36 in) |
| Weight | 136 g (4.80 oz) | |
| SIM | Micro-SIM | |
| Display | Type | IPS LCD |
| Size | 4.5 inches, 55.8 cm2 (~64.6% screen-to-body ratio) | |
| Resolution | 480 x 854 pixels, 16:9 ratio (~218 ppi density) | |
| Protection | Corning Gorilla Glass 3 | |
| ClearBlack display | ||
| Platform | OS | Microsoft Windows Phone 8.1 |
| Hardware | Chipset | Qualcomm Snapdragon 400 (28 nm) |
| CPU | Quad-core 1.2 GHz Cortex-A7 | |
| GPU | Adreno 305 | |
| Memory | Memory Slot | microSDXC (dedicated slot) |
| Internal | 8GB 1GB RAM | |
| eMMC 4.5 | ||
| Main Camera | Camera | 5 MP, 1/4.0", AF |
| Features | Panorama | |
| Video | Yes | |
| Front Camera | Camera | No |
| Audio | Loudspeaker | Yes |
| 3.5mm Port | Yes | |
| Connectivity | Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, hotspot |
| Bluetooth | 4.0, A2DP, LE/ aptX after WP8 Denim update | |
| GPS | Yes, with A-GPS, GLONASS | |
| NFC | No | |
| Radio | FM radio | |
| USB | microUSB 2.0 | |
| Features | Sensors | Accelerometer |
| Battery | Type | Li-Ion 1830 mAh, removable (BL-5H) |
| Other | Colors | Black |
| Price | About 100 EUR | |
Nokia Lumia 638
Nokia Lumia 638Microsoft Windows Phone 8.1phone, Nokia Lumia 638 price, 2014, December. Released 2014, December, Features IPS LCD, Qualcomm Snapdragon 400 (28 nm), 1830 mAh battery, 8GB 1GB RAMmemory.
