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Phone Ericsson T28 World Kyocera SoHo KX1 Motorola v120x Ericsson R278d Kyocera K404
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? ? ? ?
Display Resolution & Type ? 128 x 128 pixels
LCD (STN)
? 101 x 40 pixels 104 x 90 pixels
LCD (STN)
Display Refresh ? ? ? ? ?
Battery 500 mAh ? ? ? 900 mAh
Processor ? ? ? ? ?
RAM ? ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera - - - - -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - - - - -
Front Camera - - - - -
Weight 3.14 oz
(89g)
3.4 oz
(96g)
4.5 oz
(128g)
9.28 oz
(263g)
3.52 oz
(100g)
Dimensions 3.9" x 2" x 0.6"
(99 x 51 x 15.2 mm)
3.46" x 1.73" x 0.94"
(88 x 44 x 23.9 mm)
5" x 1.7" x 1.1"
(127 x 43 x 27.9 mm)
5.1" x 2" x 1"
(130 x 51 x 25.4 mm)
4.45" x 1.89" x 0.91"
(113 x 48 x 23.1 mm)
Form Factor Flip Clamshell Slab Slab Slab
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1900

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

AMPS: 850

TDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

AMPS: 850

Data Technology - 1xRTT - - 1xRTT
Features 
Flashlight - - - - Yes
GPS / Location - Yes - - Yes
Accessibility
Hearing Aid Compatible - Yes - - -
Multiple Languages - Yes Yes Yes Yes
TTY/TDD (Digital) - Yes - - Yes
Alerts
Extra Display - Yes - - -
Ringer Profiles Yes - Yes Yes -
Connectivity
USB - Yes - - -
Contacts
Ringer ID - Yes - - -
Voice Dialing Yes Yes Yes - Yes
Customization
Changeable Body Plates - Yes - - Yes
Custom Graphics - Yes - - Yes
Custom Ringtones Yes Yes Yes Yes Yes
Data & Network
Data Tethering Yes Yes Yes Yes -
WAP / Web Browser - Yes Yes Yes -
Input
Predictive Text Entry - Yes Yes Yes Yes
Side Keys Yes Yes Yes Yes -
Messaging
EMS / Picture Messaging - Yes - - Yes
Text Messaging Templates - - Yes - -
Productivity
Alarm Yes Yes Yes Yes Yes
Calculator Yes Yes - - Yes
Calendar - Yes Yes - Yes
Voice Memo - - Yes - -
Software
BREW - Yes - - -
Games Yes Yes Yes - Yes *
Voice
Headset Jack (2.5 mm) - Yes Yes - Yes
Speaker Phone - Yes - - -
  * Some versions only
  Ericsson T28 World Kyocera SoHo KX1 Motorola v120x Ericsson R278d Kyocera K404
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Ericsson T28 World Kyocera SoHo KX1 Motorola v120x Ericsson R278d Kyocera K404

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