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Phone Samsung SGH-X400 Ericsson T28 World Motorola i450 / i455
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)
? 130 x 130 pixels
LCD (STN)
Display Refresh ? ? ?
Battery 620 mAh 500 mAh ?
Processor ? ? ?
RAM ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware
Main Camera - - -
Wide Camera - - -
Tele Camera - - -
Video Capture - - -
Front Camera - - -
Weight 3.17 oz
(90g)
3.14 oz
(89g)
4.5 oz
(128g)
Dimensions 3.39" x 1.81" x 0.8"
(86 x 46 x 20.3 mm)
3.9" x 2" x 0.6"
(99 x 51 x 15.2 mm)
3.5" x 2" x 1.1"
(89 x 51 x 27.9 mm)
Form Factor Clamshell Flip Clamshell
Platform / OS (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 1900

GSM: 900, 1900

iDEN: 800

Data Technology GPRS - -
Features 
GPS / Location - - Yes
Accessibility
Hearing Aid Compatible - - Yes
M3 (mostly compatible)
Multiple Languages Yes - Yes
TTY/TDD (Digital) - - Yes
Alerts
Extra Display Yes - Yes
Ringer Profiles - Yes Yes
Connectivity
Infrared (IR) Yes - -
USB - - Yes
Contacts
Picture ID Yes - Yes
Ringer ID Yes - Yes
Voice Dialing - Yes Yes
Customization
Custom Graphics Yes - Yes
Custom Ringtones Yes Yes Yes
Real-Music Ringers - - Yes *
Data & Network
Data Tethering - Yes Yes
WAP / Web Browser Yes - Yes
Input
Predictive Text Entry Yes - Yes
Side Keys Yes Yes Yes
Messaging
EMS / Picture Messaging Yes - -
MMS - - Yes
Text Messaging Templates Yes - Yes
Music
FM Radio Yes - -
Productivity
Alarm Yes Yes -
Calculator Yes Yes -
Calendar Yes - Yes
To-Do List Yes - -
Voice Memo - - Yes
Software
Games Yes Yes Yes
Java (J2ME) Yes - Yes
Voice
Headset Jack (2.5 mm) Yes - Yes
Push-To-Talk - - Yes
Speaker Phone - - Yes
  * Some versions only
  Samsung SGH-X400 Ericsson T28 World Motorola i450 / i455
  X > < X > < X

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

 
Phone Samsung SGH-X400 Ericsson T28 World Motorola i450 / i455

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