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Phone Samsung SGH-X640 Samsung SGH-E340 / SGH-E340E Motorola Rival A455 Motorola W175
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Not yet released Released Released
Specifications 
Display Size ? ? 2.2" diag.
4 : 3
?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
176 x 220 pixels
(~131 ppi)
LCD (TFT/TFD)
128 x 128 pixels
LCD (STN)
Display Refresh ? ? ? ?
Battery 800 mAh ? 940 mAh ?
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera Yes Yes 2 megapixel -
Wide Camera - - - -
Tele Camera - - - -
Video Capture - ? QVGA (320 x 240) -
Front Camera - - - -
Weight 3 oz
(85g)
2.75 oz
(78g)
4.48 oz
(127g)
3 oz
(85g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.39" x 1.77" x 0.94"
(86 x 45 x 23.9 mm)
3.82" x 1.96" x 0.73"
(97 x 50 x 18.5 mm)
4.49" x 1.69" x 0.55"
(114 x 43 x 14 mm)
Form Factor Clamshell Clamshell Slide Slab
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 1900

GSM: 900, 1800, 1900

CDMA: 850, 1900

GSM: 850, 1900

Data Technology GPRS GPRS EVDO r0 -
Features 
GPS / Location - - Yes -
Accessibility
Hearing Aid Compatible - - Yes
M3, T3 (mostly tele-coil compatible)
-
Multiple Languages Yes Yes Yes Yes
TTY/TDD (Digital) - - Yes Yes
Alerts
Extra Display - Yes - -
Connectivity
Bluetooth - Yes Yes -
USB - Yes Yes
Micro-USB
Yes
Contacts
Picture ID Yes - Yes -
Ringer ID Yes - Yes -
Voice Dialing - - 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 - Yes
Side Keys Yes Yes Yes -
Text Keyboard, Hardware - - Yes -
Touch Screen - - Yes -
Memory
Memory Card Slot - - Yes -
Messaging
Email Client - Yes Yes -
EMS / Picture Messaging Yes Yes Yes -
Instant Messaging - - Yes -
MMS Yes Yes Yes -
Text Messaging Templates Yes - Yes Yes
Music
Headphone Jack (3.5mm) - - Yes -
Music Player - Yes Yes -
Productivity
Alarm Yes - Yes Yes
Calculator Yes - Yes Yes
Calendar Yes - Yes Yes
To-Do List Yes - - -
Voice Memo Yes Yes Yes -
Software
BREW - - Yes -
Games Yes Yes Yes Yes
Java (J2ME) Yes Yes - -
Voice
Headset Jack (2.5 mm) Yes - - -
Speaker Phone Yes Yes Yes Yes
  Samsung SGH-X640 Samsung SGH-E340 / SGH-E340E Motorola Rival A455 Motorola W175
  X > < X > < X > < X

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

 
Phone Samsung SGH-X640 Samsung SGH-E340 / SGH-E340E Motorola Rival A455 Motorola W175

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