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Phone Ericsson R278d Sony Ericsson S710a Ericsson T66 Sony Ericsson T61c Kyocera K404
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 240 x 320 pixels
LCD (TFT/TFD)
? ? 104 x 90 pixels
LCD (STN)
Display Refresh ? ? ? ? ?
Battery ? 780 mAh ? ? 900 mAh
Processor ? ? ? ? ?
RAM ? ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera - 1 megapixel - - -
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - QCIF (176 x 144) - - -
Front Camera - - - - -
Weight 9.28 oz
(263g)
4.83 oz
(137g)
2.08 oz
(59g)
4.4 oz
(125g)
3.52 oz
(100g)
Dimensions 5.1" x 2" x 1"
(130 x 51 x 25.4 mm)
4.23" x 1.93" x 0.96"
(107 x 49 x 24.4 mm)
3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
4.8" x 2.13" x 0.92"
(122 x 54 x 23.4 mm)
4.45" x 1.89" x 0.91"
(113 x 48 x 23.1 mm)
Form Factor Slab Swivel Slab Slab Slab
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

TDMA: 850, 1900

AMPS: 850

GSM: 850, 1800, 1900

GSM: 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

AMPS: 850

Data Technology - EDGE - 1xRTT 1xRTT
Features 
Flashlight - - - - Yes
GPS / Location - - - Yes Yes
Accessibility
Multiple Languages Yes Yes Yes Yes Yes
TTY/TDD (Digital) - Yes - - Yes
Alerts
Ringer Profiles Yes Yes Yes Yes -
Connectivity
Bluetooth - Yes
Classic Audio
- Yes -
Infrared (IR) - Yes - - -
USB - Yes - - -
Contacts
Picture ID - Yes - - -
Ringer ID - Yes - - -
Voice Dialing - Yes - Yes Yes
Customization
Changeable Body Plates - - - Yes Yes
Custom Graphics - Yes Yes Yes Yes
Custom Ringtones Yes Yes Yes Yes Yes
Data & Network
Data Tethering Yes Yes - Yes -
WAP / Web Browser Yes Yes Yes Yes -
Input
Predictive Text Entry Yes Yes Yes Yes Yes
Side Keys Yes Yes Yes Yes -
Memory
Memory Card Slot - Yes - - -
Messaging
Email Client - Yes - - -
EMS / Picture Messaging - Yes Yes Yes Yes
MMS - Yes - - -
Text Messaging Templates - Yes Yes Yes -
Music
Music Player - Yes - - -
Productivity
Alarm Yes Yes Yes Yes Yes
Calculator - Yes Yes Yes Yes
Calendar - Yes Yes Yes Yes
To-Do List - Yes Yes - -
Voice Memo - Yes - Yes -
Software
Games - Yes Yes Yes Yes *
Java (J2ME) - Yes - - -
Voice
Headset Jack (2.5 mm) - - - Yes Yes
Speaker Phone - Yes - - -
  * Some versions only
  Ericsson R278d Sony Ericsson S710a Ericsson T66 Sony Ericsson T61c Kyocera K404
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Ericsson R278d Sony Ericsson S710a Ericsson T66 Sony Ericsson T61c Kyocera K404

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