Nokia Lumia 638
⚖️136 g (4.80 oz), 129.5 x 66.7 x 9.2 mm thickness
📱Microsoft Windows Phone 8.1
💾8GB 1GB RAM, microSDXC (dedicated slot)
4.5"
480x854 pixels
5MP
Yes
1GB RAM
Qualcomm Snapdragon 400
1830mAh
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Network
Technology
GSM / HSPA / LTE
2G bands
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 850 / 900 / 1900 / 2100 - RM-1010
4G bands
3, 7, 38, 39, 40, 41
Speed
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Launch
Announced
2014, December. Released 2014, December
Status
Discontinued
Body
Dimensions
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
Chipset
Qualcomm Snapdragon 400 (28 nm)
CPU
Quad-core 1.2 GHz Cortex-A7
GPU
Adreno 305
Memory
Card slot
microSDXC (dedicated slot)
Internal
8GB 1GB RAM
eMMC 4.5
Main Camera
Single
5 MP, 1/4.0", AF
Features
Panorama
Video
Yes
Selfie camera
0
N
1
o
Sound
Loudspeaker
Yes
3.5mm jack
Yes
Comms
WLAN
Wi-Fi 802.11 b/g/n, DLNA, hotspot
Bluetooth
4.0, A2DP, LE/ aptX after WP8 Denim update
Positioning
GPS, GLONASS
NFC
No
Radio
FM radio
USB
microUSB 2.0
Features
Sensors
Accelerometer
Battery
Type
Li-Ion 1830 mAh, removable (BL-5H)
Misc
Colors
Black
SAR EU
1.46 W/kg (head) 0.95 W/kg (body)