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Phone Samsung SGH-A437 / A436 Samsung SGH-X640
Current U.S. Carriers (none) (none)
Global Availability Released Released
Specifications 
Display Size 2" diag.
4 : 3
?
Display Resolution & Type 128 x 160 pixels
(~102 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh ? ?
Battery 900 mAh 800 mAh
Processor ? ?
RAM ? ?
Storage ? raw hardware ? raw hardware
Main Camera Yes Yes
Wide Camera - -
Tele Camera - -
Video Capture - -
Front Camera - -
Weight 2.9 oz
(82g)
3 oz
(85g)
Dimensions 3.74" x 1.89" x 0.63"
(95 x 48 x 16 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
Form Factor Clamshell Clamshell
Platform / OS (proprietary) (proprietary)
Network Bands

GSM: 850, 900, 1800, 1900

GSM: 900, 1800, 1900

Data Technology EDGE GPRS
Features 
Accessibility
Hearing Aid Compatible Yes *
M3, T3 (mostly tele-coil compatible)
-
Multiple Languages Yes Yes
TTY/TDD (Digital) Yes -
Alerts
Extra Display Yes -
Connectivity
Bluetooth Yes -
Contacts
Picture ID Yes Yes
Ringer ID Yes Yes
Customization
Custom Graphics Yes Yes
Custom Ringtones Yes Yes
Data & Network
Data Tethering Yes -
WAP / Web Browser Yes Yes
Input
Predictive Text Entry Yes Yes
Side Keys Yes Yes
Messaging
EMS / Picture Messaging - Yes
Instant Messaging Yes -
MMS Yes Yes
Text Messaging Templates Yes Yes
Productivity
Alarm Yes Yes
Calculator Yes Yes
Calendar Yes Yes
To-Do List Yes Yes
Voice Memo Yes Yes
Software
Games Yes Yes
Java (J2ME) Yes Yes
Voice
Headset Jack (2.5 mm) - Yes
Speaker Phone Yes Yes
  * Some versions only
  Samsung SGH-A437 / A436 Samsung SGH-X640
  X > < X

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

 
Phone Samsung SGH-A437 / A436 Samsung SGH-X640

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