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Phone Samsung SGH-X640 ZTE Z331 Samsung M300 LG VX-8550 Chocolate
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 2.4" diag.
4 : 3
? ?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
176 x 220 pixels
(~117 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery 800 mAh 950 mAh ? 800 mAh
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera Yes 3 megapixel Yes 1 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - QCIF (176 x 144) - QCIF (176 x 144)
Front Camera - - - -
Weight 3 oz
(85g)
4 oz
(113g)
2.68 oz
(76g)
3.24 oz
(92g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.84" x 2.02" x 0.69"
(98 x 51 x 17.5 mm)
3.6" x 1.9" x 0.7"
(91 x 48 x 17.8 mm)
3.85" x 1.87" x 0.67"
(98 x 47 x 17 mm)
Form Factor Clamshell Clamshell Clamshell Slide
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

Data Technology GPRS HSDPA 3.6 1xRTT EVDO r0
Features 
GPS / Location - Yes Yes Yes
Accessibility
Hearing Aid Compatible - Yes
M3, T4 (very tele-coil compatible)
Yes
M4, T4 (very tele-coil compatible)
Yes
M4 (very compatible)
Multiple Languages Yes Yes Yes Yes
TTY/TDD (Digital) - Yes Yes Yes
Alerts
Extra Display - Yes Yes -
Ringer Profiles - Yes - -
Connectivity
Bluetooth - Yes Yes Yes
USB - Yes
Micro-USB
Yes Yes
Contacts
Picture ID Yes Yes Yes Yes
Ringer ID Yes Yes Yes Yes
Voice Dialing - - 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 Yes
WAP / Web Browser Yes Yes Yes Yes
Input
Predictive Text Entry Yes Yes Yes Yes
Side Keys Yes Yes Yes Yes
Memory
Memory Card Slot - Yes - Yes
Messaging
Email Client - Yes - -
EMS / Picture Messaging Yes - - -
Instant Messaging - Yes - -
MMS 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 -
Voice Memo Yes Yes Yes Yes
Software
BREW - - - Yes
Games Yes Yes Yes Yes
Java (J2ME) Yes Yes Yes -
Voice
Headset Jack (2.5 mm) Yes - Yes Yes
Speaker Phone Yes Yes Yes Yes
  Samsung SGH-X640 ZTE Z331 Samsung M300 LG VX-8550 Chocolate
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-X640 ZTE Z331 Samsung M300 LG VX-8550 Chocolate

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