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Phone Ericsson T66 Samsung SGH-E640 Samsung SGH-A157 Sony Ericsson K550 / W610
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 1.8" diag.
4 : 3
?
Display Resolution & Type ? 176 x 220 pixels
LCD (TFT/TFD)
128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery ? 800 mAh 800 mAh ?
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware 256 MB ? raw hardware
Main Camera - 1 megapixel - 2 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - QCIF (176 x 144) - ?
Front Camera - - - -
Weight 2.08 oz
(59g)
3.17 oz
(90g)
2.99 oz
(85g)
3 oz
(85g)
Dimensions 3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
3.37" x 1.78" x 0.93"
(86 x 45 x 23.6 mm)
3.83" x 1.84" x 0.65"
(97 x 47 x 16.5 mm)
4" x 1.8" x 0.5"
(102 x 46 x 12.7 mm)
Form Factor Slab Clamshell Clamshell Slab
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 1900

GSM: 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

GSM: 850, 900, 1800, 1900

Data Technology - GPRS ? EDGE
Features 
GPS / Location - - Yes -
Accessibility
Adjustable Text Size - - Yes -
Hearing Aid Compatible - - Yes -
Multiple Languages Yes Yes Yes Yes
TTY/TDD (Digital) - - Yes -
Alerts
Extra Display - Yes - -
Ringer Profiles Yes - Yes Yes
Connectivity
Bluetooth - Yes - Yes
Infrared (IR) - - - Yes
USB - Yes Yes
Micro-USB
Yes
Contacts
Picture ID - Yes Yes Yes
Ringer ID - Yes Yes Yes
Voice Dialing - - - Yes
Customization
Custom Graphics Yes Yes Yes Yes
Custom Ringtones Yes Yes Yes Yes
Real-Music Ringers - Yes Yes Yes
Data & Network
Data Tethering - - - Yes
WAP / Web Browser Yes Yes Yes Yes
Input
Predictive Text Entry Yes Yes Yes Yes
Side Keys Yes Yes - Yes
Memory
Memory Card Slot - - - Yes
Messaging
Email Client - Yes - Yes
EMS / Picture Messaging Yes Yes - Yes
MMS - Yes Yes Yes
Text Messaging Templates Yes Yes Yes Yes
Music
FM Radio - - - Yes
Music Player - Yes - Yes
Productivity
Alarm Yes Yes Yes Yes
Calculator Yes Yes Yes Yes
Calendar Yes Yes Yes Yes
To-Do List Yes Yes Yes Yes
Voice Memo - Yes Yes Yes
Software
Games Yes Yes - Yes
Java (J2ME) - Yes - Yes
Voice
Speaker Phone - Yes Yes Yes
  Ericsson T66 Samsung SGH-E640 Samsung SGH-A157 Sony Ericsson K550 / W610
  X > < X > < X > < X

NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Ericsson T66 Samsung SGH-E640 Samsung SGH-A157 Sony Ericsson K550 / W610

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