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Phone Samsung SGH-X400 Ericsson T28 World Motorola i450 / i455 Samsung SPH-A800 / MM-A800
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? ? ?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
? 130 x 130 pixels
LCD (STN)
240 x 320 pixels
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery 620 mAh 500 mAh ? ?
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera - - - 2 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - - - QCIF (176 x 144)
Front Camera - - - -
Weight 3.17 oz
(90g)
3.14 oz
(89g)
4.5 oz
(128g)
5.08 oz
(144g)
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)
3.94" x 1.93" x 1.02"
(100 x 49 x 25.9 mm)
Form Factor Clamshell Flip Clamshell Slide
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 1900

GSM: 900, 1900

iDEN: 800

CDMA: 850, 1900

AMPS: 850

Data Technology GPRS - - 1xRTT
Features 
GPS / Location - - Yes Yes
Accessibility
Hearing Aid Compatible - - Yes -
Multiple Languages Yes - Yes Yes
TTY/TDD (Digital) - - Yes Yes
Alerts
Extra Display Yes - Yes -
Ringer Profiles - Yes Yes -
Connectivity
Infrared (IR) Yes - - -
USB - - Yes Yes
Contacts
Picture ID Yes - Yes Yes
Ringer ID Yes - Yes Yes
Voice Dialing - Yes Yes Yes
Customization
Custom Graphics Yes - Yes Yes
Custom Ringtones Yes Yes Yes Yes
Real-Music Ringers - - 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 Yes
Memory
Memory Card Slot - - - Yes
Messaging
EMS / Picture Messaging Yes - - -
MMS - - Yes -
Text Messaging Templates Yes - Yes Yes
Music
FM Radio Yes - - -
Music Player - - - Yes
Productivity
Alarm Yes Yes - Yes
Calculator Yes Yes - Yes
Calendar Yes - Yes Yes
To-Do List Yes - - Yes
Voice Memo - - Yes Yes
Software
Games Yes Yes Yes Yes
Java (J2ME) Yes - Yes Yes
Voice
Headset Jack (2.5 mm) Yes - Yes Yes
Push-To-Talk - - Yes -
Speaker Phone - - Yes -
  * Some versions only
  Samsung SGH-X400 Ericsson T28 World Motorola i450 / i455 Samsung SPH-A800 / MM-A800
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-X400 Ericsson T28 World Motorola i450 / i455 Samsung SPH-A800 / MM-A800

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