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Phone Samsung Galaxy S Lightray 4G Samsung SGH-X640
Current U.S. Carriers (none) (none)
Global Availability Released Released
Specifications 
Display Size 4.3" diag.
5 : 3
?
Display Resolution & Type 480 x 800 pixels
(~217 ppi)
AMOLED
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh 60 Hz ?
Battery 1,600 mAh 800 mAh
Processor 1 GHz Samsung Exynos 3 (Hummingbird) C111 ?
RAM ? ?
Storage ? raw hardware ? raw hardware
Main Camera 8 megapixel Yes
Wide Camera - -
Tele Camera - -
Video Capture 720p HD -
Front Camera 1 megapixel -
Weight 5.01 oz
(142g)
3 oz
(85g)
Dimensions 5.11" x 2.66" x 0.46"
(130 x 68 x 11.7 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
Form Factor Slab Clamshell
Platform / OS Android (proprietary)
Network Bands

4G LTE: 2, 4

CDMA: 850, 1700, 1900

GSM: 900, 1800, 1900

Data Technology LTE (Cat 3) GPRS
Features 
GPS / Location n/a -
Accessibility
Hearing Aid Compatible Yes
M4, T4 (very tele-coil compatible)
-
Multiple Languages n/a Yes
TTY/TDD (Digital) Yes -
Connectivity
Bluetooth Yes -
Mobile Hotspot n/a -
USB Yes
Micro-USB
-
Wi-Fi Yes -
Contacts
Picture ID n/a Yes
Ringer ID n/a Yes
Voice Dialing n/a -
Customization
Custom Graphics n/a Yes
Custom Ringtones n/a Yes
Real-Music Ringers n/a -
Data & Network
Data Tethering n/a -
WAP / Web Browser n/a Yes
Input
Predictive Text Entry n/a Yes
Side Keys Yes Yes
Touch Screen Yes
Capacitive
-
Memory
Memory Card Slot Yes -
Messaging
Email Client n/a -
EMS / Picture Messaging n/a Yes
Instant Messaging n/a -
MMS n/a Yes
Text Messaging Templates n/a Yes
Music
Headphone Jack (3.5mm) Yes -
Music Player n/a -
Photo & Video
TV Output Yes -
Productivity
Alarm n/a Yes
Calculator n/a Yes
Calendar n/a Yes
To-Do List n/a Yes
Voice Memo n/a Yes
Software
Games n/a Yes
Java (J2ME) n/a Yes
Voice
Headset Jack (2.5 mm) n/a Yes
Speaker Phone Yes Yes
  Samsung Galaxy S Lightray 4G Samsung SGH-X640
  X > < X

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Phone Samsung Galaxy S Lightray 4G Samsung SGH-X640

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