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Phone Ericsson T28 World Ericsson T39 Motorola v66 Ericsson R520 Sony Ericsson K300
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? ? ? ?
Display Resolution & Type ? ?
LCD (Grayscale)
? ? 128 x 128 pixels
LCD (STN)
Display Refresh ? ? ? ? ?
Battery 500 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)
3.03 oz
(86g)
2.79 oz
(79g)
4.23 oz
(120g)
3 oz
(85g)
Dimensions 3.9" x 2" x 0.6"
(99 x 51 x 15.2 mm)
3.78" x 1.97" x 0.71"
(96 x 50 x 18 mm)
3.31" x 1.73" x 0.83"
(84 x 44 x 21.1 mm)
5.12" x 1.97" x 0.63"
(130 x 50 x 16 mm)
3.93" x 1.78" x 0.76"
(100 x 45 x 19.3 mm)
Form Factor Flip Flip Clamshell Slab Slab
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1900

GSM: 900, 1800, 1900

GSM: 900, 1800, 1900

GSM: 900, 1800, 1900

GSM: 850, 1800, 1900

*

Data Technology - GPRS GPRS GPRS GPRS
Features 
Accessibility
Multiple Languages - Yes - Yes Yes
TTY/TDD (Digital) - - - - Yes
Alerts
Ringer Profiles Yes Yes - Yes Yes
Connectivity
Bluetooth - Yes
HSP, DUN, OPP, Sync
- Yes
HSP, Sync, OPP, DUN
-
Infrared (IR) - Yes - Yes Yes
USB - - Yes - Yes
Contacts
Picture ID - - - - Yes
Voice Dialing Yes Yes Yes Yes Yes
Customization
Custom Graphics - Yes - - Yes
Custom Ringtones Yes Yes - Yes Yes
Data & Network
Data Tethering Yes Yes Yes Yes Yes
WAP / Web Browser - Yes Yes Yes Yes
Input
Predictive Text Entry - Yes Yes Yes Yes
Side Keys Yes Yes Yes Yes -
Messaging
Email Client - - - - Yes
EMS / Picture Messaging - - - - Yes
MMS - - - - Yes
Text Messaging Templates - Yes - Yes Yes
Productivity
Alarm Yes Yes Yes Yes Yes
Calculator Yes Yes Yes Yes Yes
Calendar - Yes Yes Yes Yes
To-Do List - - - - Yes
Voice Memo - Yes Yes Yes Yes
Software
Games Yes Yes Yes Yes Yes
Java (J2ME) - - - - Yes
Voice
Headset Jack (2.5 mm) - - Yes - -
Speaker Phone - - - Yes Yes
  Ericsson T28 World Ericsson T39 Motorola v66 Ericsson R520 Sony Ericsson K300
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Ericsson T28 World Ericsson T39 Motorola v66 Ericsson R520 Sony Ericsson K300

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