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Phone Samsung SGH-X640 Samsung SCH-U340 / Snap Samsung SCH-A570
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)
128 x 160 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (STN)
Display Refresh ? ? ?
Battery 800 mAh 1,000 mAh ?
Processor ? ? ?
RAM ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware
Main Camera Yes Yes -
Wide Camera - - -
Tele Camera - - -
Video Capture - - -
Front Camera - - -
Weight 3 oz
(85g)
2.82 oz
(80g)
3.6 oz
(102g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.5" x 1.8" x 0.77"
(89 x 46 x 19.6 mm)
3.3" x 1.8" x 0.9"
(84 x 46 x 22.9 mm)
Form Factor Clamshell Clamshell Clamshell
Platform / OS (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

Data Technology GPRS - 1xRTT
Features 
GPS / Location - Yes Yes
Accessibility
Hearing Aid Compatible - Yes
M4, T4 (very tele-coil compatible)
-
Multiple Languages Yes Yes Yes
TTY/TDD (Digital) - Yes Yes
Alerts
Extra Display - Yes Yes
Contacts
Picture ID Yes Yes -
Ringer ID Yes Yes -
Voice Dialing - Yes Yes
Customization
Custom Graphics Yes - Yes
Custom Ringtones Yes - Yes
Data & Network
WAP / Web Browser Yes - Yes
Input
Predictive Text Entry Yes Yes Yes
Side Keys Yes Yes Yes
Messaging
EMS / Picture Messaging Yes - Yes
Instant Messaging - Yes -
MMS Yes Yes -
Text Messaging Templates Yes Yes Yes
Productivity
Alarm Yes Yes Yes
Calculator Yes Yes Yes
Calendar Yes Yes Yes
To-Do List Yes - Yes
Voice Memo Yes - Yes
Software
BREW - - Yes
Games Yes - Yes
Java (J2ME) Yes - -
Voice
Headset Jack (2.5 mm) Yes Yes Yes
Speaker Phone Yes Yes -
  Samsung SGH-X640 Samsung SCH-U340 / Snap Samsung SCH-A570
  X > < X > < X

NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-X640 Samsung SCH-U340 / Snap Samsung SCH-A570

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