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Phone Samsung SGH-X640 Motorola i450 / i455 Samsung SGH-i250
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Not yet released
Specifications 
Display Size ? ? ?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
130 x 130 pixels
LCD (STN)
176 x 220 pixels
LCD (TFT/TFD)
Display Refresh ? ? ?
Battery 800 mAh ? ?
Processor ? ? ?
RAM ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware
Main Camera Yes - 1 megapixel
Wide Camera - - -
Tele Camera - - -
Video Capture - - ?
Front Camera - - -
Weight 3 oz
(85g)
4.5 oz
(128g)
4.59 oz
(130g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.5" x 2" x 1.1"
(89 x 51 x 27.9 mm)
3.7" x 1.97" x 1.02"
(94 x 50 x 25.9 mm)
Form Factor Clamshell Clamshell Clamshell
Platform / OS (proprietary) (proprietary) Windows Mobile Standard
Network Bands

GSM: 900, 1800, 1900

iDEN: 800

GSM: 900, 1800, 1900

Data Technology GPRS - GPRS
Features 
GPS / Location - Yes n/a
Accessibility
Hearing Aid Compatible - Yes
M3 (mostly compatible)
-
Multiple Languages Yes Yes n/a
TTY/TDD (Digital) - Yes -
Alerts
Extra Display - Yes Yes
Ringer Profiles - Yes Yes
Connectivity
Bluetooth - - Yes
USB - Yes -
Contacts
Picture ID Yes Yes n/a
Ringer ID Yes Yes n/a
Voice Dialing - Yes n/a
Customization
Custom Graphics Yes Yes n/a
Custom Ringtones Yes Yes n/a
Real-Music Ringers - Yes * n/a
Data & Network
Data Tethering - Yes n/a
WAP / Web Browser Yes Yes n/a
Input
Predictive Text Entry Yes Yes n/a
Side Keys Yes Yes Yes
Memory
Memory Card Slot - - Yes
Messaging
Email Client - - n/a
EMS / Picture Messaging Yes - n/a
MMS Yes Yes n/a
Text Messaging Templates Yes Yes n/a
Music
Music Player - - n/a
Productivity
Alarm Yes - n/a
Calculator Yes - n/a
Calendar Yes Yes n/a
To-Do List Yes - n/a
Voice Memo Yes Yes n/a
Software
Games Yes Yes n/a
Java (J2ME) Yes Yes n/a
Voice
Headset Jack (2.5 mm) Yes Yes n/a
Push-To-Talk - Yes -
Speaker Phone Yes Yes -
  * Some versions only
  Samsung SGH-X640 Motorola i450 / i455 Samsung SGH-i250
  X > < X > < X

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

 
Phone Samsung SGH-X640 Motorola i450 / i455 Samsung SGH-i250

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