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Phone Samsung SGH-X640 LG Trax CU575 LG AX-490
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size ? ? ?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh ? ? ?
Battery 800 mAh 980 mAh 1,100 mAh
Processor ? ? ?
RAM ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware
Main Camera Yes 1 megapixel Yes
Wide Camera - - -
Tele Camera - - -
Video Capture - QCIF (176 x 144) -
Front Camera - - -
Weight 3 oz
(85g)
3.89 oz
(110g)
3.79 oz
(107g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.89" x 2.01" x 0.62"
(99 x 51 x 15.7 mm)
3.74" x 1.92" x 1"
(95 x 49 x 25.4 mm)
Form Factor Clamshell Clamshell Clamshell
Platform / OS (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

Data Technology GPRS HSDPA 3.6 1xRTT
Features 
GPS / Location - - Yes
Accessibility
Hearing Aid Compatible - - Yes
M3 (mostly compatible)
Multiple Languages Yes Yes Yes
TTY/TDD (Digital) - Yes Yes
Alerts
Extra Display - Yes Yes
Connectivity
Bluetooth - Yes Yes
USB - Yes Yes
Contacts
Picture ID Yes Yes Yes
Ringer ID Yes - Yes
Voice Dialing - Yes Yes
Customization
Custom Graphics Yes Yes Yes
Custom Ringtones Yes Yes Yes
Real-Music Ringers - Yes Yes
Data & Network
Data Tethering - Yes Yes
WAP / Web Browser Yes Yes Yes
Input
Predictive Text Entry Yes Yes -
Side Keys Yes Yes Yes
Text Keyboard, Hardware - - Yes
Memory
Memory Card Slot - Yes -
Messaging
Email Client - Yes -
EMS / Picture Messaging Yes - -
Instant Messaging - Yes -
MMS Yes Yes Yes
Text Messaging Templates Yes Yes Yes
Music
Music Player - Yes -
Stereo Speakers - - Yes
Productivity
Alarm Yes Yes Yes
Calculator Yes Yes Yes
Calendar Yes Yes Yes
To-Do List Yes Yes -
Voice Memo Yes Yes Yes
Software
BREW - - Yes
Games Yes Yes Yes
Java (J2ME) Yes Yes -
Voice
Headset Jack (2.5 mm) Yes - Yes
Speaker Phone Yes Yes Yes
  Samsung SGH-X640 LG Trax CU575 LG AX-490
  X > < X > < X

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Phone Samsung SGH-X640 LG Trax CU575 LG AX-490

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