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Phone Samsung SGH-X640 Samsung SGH-A657 Samsung Impression SGH-A877 Samsung SGH-P705
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Not yet released
Specifications 
Display Size ? ? 3.2" diag.
5 : 3
?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
240 x 400 pixels
(~146 ppi)
AMOLED
176 x 220 pixels
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery 800 mAh 1,420 mAh 1,000 mAh ?
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera Yes - 3 megapixel -
Wide Camera - - - -
Tele Camera - - - -
Video Capture - - QVGA (320 x 240) -
Front Camera - - - -
Weight 3 oz
(85g)
4.34 oz
(123g)
5.2 oz
(147g)
4.59 oz
(130g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
4.53" x 2.05" x 0.77"
(115 x 52 x 19.6 mm)
4.48" x 2.28" x 0.64"
(114 x 58 x 16.3 mm)
3.62" x 2.01" x 1.04"
(92 x 51 x 26.4 mm)
Form Factor Clamshell Slab Slab Clamshell
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

GSM: 900, 1900

Data Technology GPRS HSDPA 3.6 HSDPA 3.6 GPRS
Features 
Flashlight - Yes - -
GPS / Location - Yes Yes -
Ruggedized - Yes - -
Accessibility
Hearing Aid Compatible - - Yes
M3 (mostly compatible)
-
Multiple Languages Yes Yes Yes Yes
TTY/TDD (Digital) - Yes - -
Alerts
Extra Display - - - Yes
Ringer Profiles - - Yes -
Connectivity
Bluetooth - Yes Yes -
Infrared (IR) - - - Yes
USB - Yes Yes -
Contacts
Picture ID Yes Yes Yes -
Ringer ID Yes Yes Yes -
Customization
Custom Graphics Yes Yes Yes Yes
Custom Ringtones Yes Yes Yes Yes
Real-Music Ringers - Yes Yes -
Data & Network
Data Tethering - Yes Yes -
WAP / Web Browser Yes Yes Yes Yes
Input
Predictive Text Entry Yes Yes Yes Yes
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - Yes -
Touch Screen - - Yes
Resistive
-
Memory
Memory Card Slot - Yes Yes -
Messaging
Email Client - Yes Yes Yes
EMS / Picture Messaging Yes - - Yes
Instant Messaging - Yes Yes -
MMS Yes Yes Yes Yes
Text Messaging Templates Yes Yes Yes Yes
Music
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 Yes
Software
Games Yes Yes Yes Yes
Java (J2ME) Yes Yes Yes Yes
Voice
Headset Jack (2.5 mm) Yes - - Yes
Push-To-Talk - Yes - -
Speaker Phone Yes Yes Yes -
  Samsung SGH-X640 Samsung SGH-A657 Samsung Impression SGH-A877 Samsung SGH-P705
  X > < X > < X > < X

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

 
Phone Samsung SGH-X640 Samsung SGH-A657 Samsung Impression SGH-A877 Samsung SGH-P705

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