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Phone Samsung SPH-A520 Samsung SCH-A990 Samsung SGH-E640
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size ? ? ?
Display Resolution & Type ?
LCD (STN)
240 x 320 pixels
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
Display Refresh ? ? ?
Battery ? 1,000 mAh 800 mAh
Processor ? ? ?
RAM ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware
Main Camera - 3 megapixel 1 megapixel
Wide Camera - - -
Tele Camera - - -
Video Capture - ? QCIF (176 x 144)
Front Camera - - -
Weight 3.6 oz
(102g)
4.4 oz
(125g)
3.17 oz
(90g)
Dimensions 3.46" x 1.83" x 0.91"
(88 x 46 x 23.1 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
3.37" x 1.78" x 0.93"
(86 x 45 x 23.6 mm)
Form Factor Clamshell Clamshell Clamshell
Platform / OS (proprietary) (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

GSM: 900, 1800, 1900

Data Technology 1xRTT EVDO r0 GPRS
Features 
Flashlight - Yes -
GPS / Location Yes Yes -
Accessibility
Hearing Aid Compatible - Yes
M3 (mostly compatible)
-
Multiple Languages Yes Yes Yes
TTY/TDD (Digital) - Yes -
Alerts
Extra Display Yes Yes Yes
Connectivity
Bluetooth - Yes Yes
USB - Yes Yes
Contacts
Picture ID Yes Yes Yes
Ringer ID Yes Yes Yes
Voice Dialing Yes Yes -
Customization
Custom Graphics Yes Yes Yes
Custom Ringtones Yes Yes Yes
Real-Music Ringers - Yes Yes
Data & Network
Data Tethering Yes Yes -
WAP / Web Browser Yes Yes Yes
Input
Predictive Text Entry Yes Yes Yes
Side Keys Yes Yes Yes
Memory
Memory Card Slot - Yes -
Messaging
Email Client - - Yes
EMS / Picture Messaging - Yes Yes
MMS - Yes Yes
Text Messaging Templates - Yes Yes
Music
Music Player - Yes Yes
Stereo Speakers - Yes -
Photo & Video
TV Output - Yes -
Productivity
Alarm Yes Yes Yes
Calculator Yes Yes Yes
Calendar Yes Yes Yes
To-Do List Yes - Yes
Voice Memo Yes Yes Yes
Software
BREW - Yes -
Games Yes Yes Yes
Java (J2ME) - - Yes
Voice
Headset Jack (2.5 mm) Yes - -
Speaker Phone - Yes Yes
  Samsung SPH-A520 Samsung SCH-A990 Samsung SGH-E640
  X > < X > < X

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

 
Phone Samsung SPH-A520 Samsung SCH-A990 Samsung SGH-E640

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