Nokia Lumia 638

Class	Smartphone
Status	Discontinued
SIM Type	Micro-SIM
Colors Available	Black
Network	2G Network: GSM 850 / 900 / 1800 / 1900 MHz 3G Network: HSDPA 850 / 900 / 1900 / 2100 MHz- RM-1010 4G Network: LTE band 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) MHz
Browser	HTML5
Form Factor	Candy bar
In The Box	Handset, Battery, Charger, Earphone, User Manual, Warranty Card

Operating System	Microsoft Windows Phone 8.1
Processor	1.2 GHz Quad-core Qualcomm Snapdragon 400

Dimension (HxWxD)	129.5 x 66.7 x 9.2 mm
Weight	136 g

Size	4.5 inches (~218 ppi)
Technology	IPS LCD capacitive touchscreen
Resolution	480 x 854 pixels

Internal Memory	8 GB
External Memory	Yes, up to 128 GB via microSD
RAM	1 GB

Type	Li-Ion 1830 mAh battery (BL-5H)

Primary Camera(Rear)	5 MP
Resolution	2592 х 1944 pixels
Digital/Optical Zoom	Digital Zoom
Features	1/4'' sensor size, Geo-tagging, Panorama

GPRS	Yes
EDGE	Yes
3G	Yes
4G	Yes
Bluetooth	v4.0, A2DP, LE/ apt-X after WP8 Denim update
USB	microUSB v2.0
Wi-Fi	Wi-Fi 802.11 b/g/n, DLNA, hotspot
GPS	Yes, with A-GPS, GLONASS

Music Player	Yes, Supports MP3, WAV, eAAC+, WMA player
MP3 Ringtone	Yes
LoudSpeaker	Yes
Video Player	Yes, Supports MP4, H.264, WMV player

SMS	Yes
MMS	Yes
Email	Yes
Push mail	Yes
Instant Messaging	Yes

Java	No
Sensors	Accelerometer
FM Radio	Yes