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Phone Ericsson T28 World Motorola MPx200 Ericsson T39 Siemens CF75 Kyocera 2135
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Not yet released Released
Specifications 
Display Size ? ? ? ? ?
Display Resolution & Type ? 176 x 220 pixels
LCD (TFT/TFD)
?
LCD (Grayscale)
128 x 160 pixels
LCD (STN)
?
Display Refresh ? ? ? ? ?
Battery 500 mAh 850 mAh ? 600 mAh 925 mAh
Processor ? ? ? ? ?
RAM ? ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera - - - Yes -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - - - - -
Front Camera - - - - -
Weight 3.14 oz
(89g)
4.16 oz
(118g)
3.03 oz
(86g)
3.17 oz
(90g)
4.7 oz
(133g)
Dimensions 3.9" x 2" x 0.6"
(99 x 51 x 15.2 mm)
3.5" x 1.88" x 1.06"
(89 x 48 x 26.9 mm)
3.78" x 1.97" x 0.71"
(96 x 50 x 18 mm)
3.43" x 1.73" x 1.26"
(87 x 44 x 32 mm)
5.07" x 1.89" x 1.02"
(129 x 48 x 25.9 mm)
Form Factor Flip Clamshell Flip Clamshell Slab
Platform / OS (proprietary) Windows Mobile Standard (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1900

GSM: 1800, 1900

*

GSM: 900, 1800, 1900

GSM: 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

Data Technology - GPRS GPRS EDGE -
Features 
Accessibility
Multiple Languages - n/a Yes Yes Yes
Alerts
Extra Display - Yes - Yes -
Ringer Profiles Yes Yes Yes - -
Connectivity
Bluetooth - - Yes
HSP, DUN, OPP, Sync
- -
Infrared (IR) - Yes Yes Yes -
USB - Yes - Yes -
Contacts
Voice Dialing Yes n/a Yes - -
Customization
Changeable Body Plates - - - - Yes
Custom Graphics - n/a Yes Yes -
Custom Ringtones Yes n/a Yes Yes Yes
Data & Network
Data Tethering Yes n/a Yes Yes Yes
WAP / Web Browser - n/a Yes Yes Yes
Input
Predictive Text Entry - n/a Yes Yes Yes
Side Keys Yes Yes Yes Yes -
Memory
Memory Card Slot - Yes - - -
Messaging
Email Client - n/a - Yes -
EMS / Picture Messaging - n/a - Yes -
MMS - n/a - Yes -
Text Messaging Templates - n/a Yes Yes Yes
Music
Music Player - n/a - - -
Productivity
Alarm Yes n/a Yes Yes Yes
Calculator Yes n/a Yes Yes Yes
Calendar - n/a Yes Yes -
To-Do List - n/a - Yes -
Voice Memo - n/a Yes Yes -
Software
Games Yes n/a Yes Yes Yes
Java (J2ME) - n/a - Yes -
Voice
Headset Jack (2.5 mm) - n/a - - Yes
Push-To-Talk - - - Yes -
Speaker Phone - Yes - Yes -
  * Some versions only
  Ericsson T28 World Motorola MPx200 Ericsson T39 Siemens CF75 Kyocera 2135
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Ericsson T28 World Motorola MPx200 Ericsson T39 Siemens CF75 Kyocera 2135

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