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Phone Samsung SGH-X820 Samsung SGH-A657 LG VX-8550 Chocolate BlackBerry 7750
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? ? ?
Display Resolution & Type 220 x 176 pixels
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
240 x 240 pixels
LCD (Color)
Display Refresh ? ? ? ?
Battery 650 mAh 1,420 mAh 800 mAh ?
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera 2 megapixel - 1 megapixel -
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? - QCIF (176 x 144) -
Front Camera - - - -
Weight 2.33 oz
(66g)
4.34 oz
(123g)
3.24 oz
(92g)
5.01 oz
(142g)
Dimensions 4.45" x 1.97" x 0.27"
(113 x 50 x 6.9 mm)
4.53" x 2.05" x 0.77"
(115 x 52 x 19.6 mm)
3.85" x 1.87" x 0.67"
(98 x 47 x 17 mm)
4.76" x 3.03" x 0.71"
(121 x 77 x 18 mm)
Form Factor Slab Slab Slide Slab
Platform / OS (proprietary) (proprietary) (proprietary) BlackBerry OS
Network Bands

GSM: 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

CDMA: 850, 1900

Data Technology EDGE HSDPA 3.6 EVDO r0 1xRTT
Features 
Flashlight - Yes - -
GPS / Location - Yes Yes n/a
Ruggedized - Yes - -
Accessibility
Hearing Aid Compatible - - Yes
M4 (very compatible)
-
Multiple Languages Yes Yes Yes n/a
TTY/TDD (Digital) - Yes Yes Yes
Alerts
Ringer Profiles - - - Yes
Connectivity
Bluetooth Yes Yes Yes -
USB Yes Yes Yes Yes
Contacts
Picture ID Yes Yes Yes n/a
Ringer ID Yes Yes Yes n/a
Voice Dialing - - Yes n/a
Customization
Custom Graphics Yes Yes Yes n/a
Custom Ringtones Yes Yes Yes n/a
Real-Music Ringers Yes Yes Yes n/a
Data & Network
Data Tethering - Yes Yes n/a
External Antenna Jack Yes - - n/a
WAP / Web Browser Yes Yes Yes n/a
Input
Predictive Text Entry Yes Yes Yes n/a
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - - Yes
Memory
Memory Card Slot - Yes Yes -
Messaging
Email Client Yes Yes - n/a
EMS / Picture Messaging Yes - - n/a
Instant Messaging - Yes - n/a
MMS Yes Yes Yes n/a
Text Messaging Templates Yes Yes Yes n/a
Music
Music Player - Yes Yes n/a
Photo & Video
TV Output Yes - - -
Productivity
Alarm Yes Yes Yes n/a
Calculator Yes Yes Yes n/a
Calendar Yes Yes Yes n/a
To-Do List Yes Yes - n/a
Voice Memo Yes Yes Yes n/a
Software
BREW - - Yes n/a
Games Yes Yes Yes n/a
Java (J2ME) Yes Yes - n/a
Voice
Headset Jack (2.5 mm) - - Yes n/a
Push-To-Talk - Yes - -
Speaker Phone Yes Yes Yes -
  Samsung SGH-X820 Samsung SGH-A657 LG VX-8550 Chocolate BlackBerry 7750
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SGH-X820 Samsung SGH-A657 LG VX-8550 Chocolate BlackBerry 7750

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