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Phone Samsung SGH-X640 Sony Ericsson Z600 Kyocera DuraCore / DuraShock Nokia 1661
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 2" diag.
4 : 3
1.8" diag.
4 : 3
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
128 x 160 pixels
(~114 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery 800 mAh ? 1,360 mAh 860 mAh
Processor ? ? Qualcomm QSC6085 ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera Yes Yes - -
Wide Camera - - - -
Tele Camera - - - -
Video Capture - - - -
Front Camera - - - -
Weight 3 oz
(85g)
3.88 oz
(110g)
4.44 oz
(126g)
2.9 oz
(82g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.54" x 1.89" x 1.1"
(90 x 48 x 27.9 mm)
3.88" x 1.96" x 0.94"
(99 x 50 x 23.9 mm)
4.25" x 1.8" x 0.53"
(108 x 46 x 13.5 mm)
Form Factor Clamshell Clamshell Clamshell Slab
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 1900

GSM: 900, 1800, 1900

CDMA: 800, 850, 1900

GSM: 850, 1900

Data Technology GPRS GPRS EVDO rA -
Features 
Flashlight - - - Yes
GPS / Location - - Yes -
Ruggedized - - Yes -
Accessibility
Adjustable Text Size - - Yes -
Hearing Aid Compatible - - Yes
M4, T4 (very tele-coil compatible)
-
Multiple Languages Yes Yes Yes -
TTY/TDD (Digital) - - Yes -
Alerts
Extra Display - Yes Yes -
Ringer Profiles - - - Yes
Connectivity
Bluetooth - Yes Yes -
Infrared (IR) - Yes - -
USB - Yes Yes -
Contacts
Picture ID Yes Yes - -
Ringer ID Yes Yes Yes -
Voice Dialing - Yes Yes -
Customization
Changeable Body Plates - Yes - -
Custom Graphics Yes Yes Yes -
Custom Ringtones Yes Yes Yes -
Real-Music Ringers - - Yes -
Data & Network
Data Tethering - Yes - -
WAP / Web Browser Yes Yes Yes -
Input
Predictive Text Entry Yes Yes Yes Yes
Side Keys Yes Yes Yes -
Messaging
Email Client - Yes - -
EMS / Picture Messaging Yes Yes - -
MMS Yes Yes Yes -
Text Messaging Templates Yes Yes Yes -
Music
FM Radio - - - Yes
Productivity
Alarm Yes Yes Yes Yes
Calculator Yes Yes Yes Yes
Calendar Yes Yes Yes Yes
To-Do List Yes Yes - -
Voice Memo Yes Yes Yes Yes
Software
Games Yes Yes Yes Yes
Java (J2ME) Yes Yes Yes -
Voice
Headset Jack (2.5 mm) Yes - Yes Yes
Push-To-Talk - - Yes * -
Speaker Phone Yes - Yes Yes
  * Some versions only
  Samsung SGH-X640 Sony Ericsson Z600 Kyocera DuraCore / DuraShock Nokia 1661
  X > < X > < X > < X

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

 
Phone Samsung SGH-X640 Sony Ericsson Z600 Kyocera DuraCore / DuraShock Nokia 1661

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