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Phone Ericsson R278d Ericsson T28 World Kyocera 2135 LG 4NE1 Sony Ericsson P910
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? ? ? ?
Display Resolution & Type 101 x 40 pixels ? ? ? 208 x 320 pixels
LCD (TFT/TFD)
Display Refresh ? ? ? ? ?
Battery ? 500 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 - - - - QCIF (176 x 144)
Front Camera - - - - -
Weight 9.28 oz
(263g)
3.14 oz
(89g)
4.7 oz
(133g)
3.7 oz
(105g)
5.47 oz
(155g)
Dimensions 5.1" x 2" x 1"
(130 x 51 x 25.4 mm)
3.9" x 2" x 0.6"
(99 x 51 x 15.2 mm)
5.07" x 1.89" x 1.02"
(129 x 48 x 25.9 mm)
4.41" x 1.73" x 0.75"
(112 x 44 x 19.1 mm)
4.53" x 2.28" x 1.02"
(115 x 58 x 25.9 mm)
Form Factor Slab Flip Slab Flip Flip
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary) UIQ (Symbian)
Network Bands

TDMA: 850, 1900

AMPS: 850

GSM: 900, 1900

CDMA: 850, 1900

AMPS: 850

CDMA: 1900

AMPS: 850

GSM: 850, 1800, 1900

*

Data Technology - - - - GPRS
Features 
Accessibility
Multiple Languages Yes - Yes Yes n/a
TTY/TDD (Digital) - - - - Yes
Alerts
Ringer Profiles Yes Yes - - Yes
Connectivity
Bluetooth - - - - Yes
Classic Audio
Infrared (IR) - - - - Yes
USB - - - - Yes
Contacts
Picture ID - - - - n/a
Ringer ID - - - Yes n/a
Voice Dialing - Yes - Yes n/a
Customization
Changeable Body Plates - - Yes Yes -
Custom Graphics - - - Yes n/a
Custom Ringtones Yes Yes Yes Yes n/a
Real-Music Ringers - - - - n/a
Data & Network
Data Tethering Yes Yes Yes Yes n/a
WAP / Web Browser Yes - Yes Yes n/a
Input
Predictive Text Entry Yes - Yes Yes n/a
Side Keys Yes Yes - Yes Yes
Text Keyboard, Hardware - - - - Yes
Touch Screen - - - - Yes
Memory
Memory Card Slot - - - - Yes
Messaging
Email Client - - - - n/a
EMS / Picture Messaging - - - - n/a
MMS - - - - n/a
Text Messaging Templates - - Yes - n/a
Music
Music Player - - - - n/a
Productivity
Alarm Yes Yes Yes - n/a
Calculator - Yes Yes Yes n/a
Calendar - - - Yes n/a
To-Do List - - - - n/a
Voice Memo - - - Yes n/a
Software
Games - Yes Yes Yes n/a
Java (J2ME) - - - - n/a
Voice
Headset Jack (2.5 mm) - - Yes Yes n/a
Speaker Phone - - - Yes Yes
  Ericsson R278d Ericsson T28 World Kyocera 2135 LG 4NE1 Sony Ericsson P910
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Ericsson R278d Ericsson T28 World Kyocera 2135 LG 4NE1 Sony Ericsson P910

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