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Phone Samsung SGH-X640 Siemens A56 / A56i Kyocera K404
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size ? ? ?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
101 x 64 pixels 104 x 90 pixels
LCD (STN)
Display Refresh ? ? ?
Battery 800 mAh 700 mAh 900 mAh
Processor ? ? ?
RAM ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware
Main Camera Yes - -
Wide Camera - - -
Tele Camera - - -
Video Capture - - -
Front Camera - - -
Weight 3 oz
(85g)
3 oz
(85g)
3.52 oz
(100g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
4" x 1.7" x 0.8"
(102 x 43 x 20.3 mm)
4.45" x 1.89" x 0.91"
(113 x 48 x 23.1 mm)
Form Factor Clamshell Slab Slab
Platform / OS (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 1900

GSM: 850, 1900

CDMA: 850, 1900

AMPS: 850

Data Technology GPRS - 1xRTT
Features 
Flashlight - - Yes
GPS / Location - Yes Yes
Accessibility
Multiple Languages Yes - Yes
TTY/TDD (Digital) - Yes Yes
Alerts
Ringer Profiles - Yes -
Contacts
Picture ID Yes Yes -
Ringer ID Yes Yes -
Voice Dialing - - Yes
Customization
Changeable Body Plates - Yes Yes
Custom Graphics Yes Yes Yes
Custom Ringtones Yes Yes Yes
Data & Network
WAP / Web Browser Yes Yes -
Input
Predictive Text Entry Yes Yes Yes
Side Keys Yes - -
Messaging
EMS / Picture Messaging Yes Yes Yes
MMS Yes - -
Text Messaging Templates Yes - -
Productivity
Alarm Yes Yes Yes
Calculator Yes Yes Yes
Calendar Yes - Yes
To-Do List Yes - -
Voice Memo Yes - -
Software
Games Yes Yes Yes *
Java (J2ME) Yes - -
Voice
Headset Jack (2.5 mm) Yes - Yes
Speaker Phone Yes - -
  * Some versions only
  Samsung SGH-X640 Siemens A56 / A56i Kyocera K404
  X > < X > < X

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

 
Phone Samsung SGH-X640 Siemens A56 / A56i Kyocera K404

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