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Phone Siemens A56 / A56i BlackBerry 7750 Samsung SGH-A657
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size ? ? ?
Display Resolution & Type 101 x 64 pixels 240 x 240 pixels
LCD (Color)
176 x 220 pixels
LCD (TFT/TFD)
Display Refresh ? ? ?
Battery 700 mAh ? 1,420 mAh
Processor ? ? ?
RAM ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware
Main Camera - - -
Wide Camera - - -
Tele Camera - - -
Video Capture - - -
Front Camera - - -
Weight 3 oz
(85g)
5.01 oz
(142g)
4.34 oz
(123g)
Dimensions 4" x 1.7" x 0.8"
(102 x 43 x 20.3 mm)
4.76" x 3.03" x 0.71"
(121 x 77 x 18 mm)
4.53" x 2.05" x 0.77"
(115 x 52 x 19.6 mm)
Form Factor Slab Slab Slab
Platform / OS (proprietary) BlackBerry OS (proprietary)
Network Bands

GSM: 850, 1900

CDMA: 850, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

Data Technology - 1xRTT HSDPA 3.6
Features 
Flashlight - - Yes
GPS / Location Yes n/a Yes
Ruggedized - - Yes
Accessibility
Multiple Languages - n/a Yes
TTY/TDD (Digital) Yes Yes Yes
Alerts
Ringer Profiles Yes Yes -
Connectivity
Bluetooth - - Yes
USB - Yes Yes
Contacts
Picture ID Yes n/a Yes
Ringer ID Yes n/a Yes
Customization
Changeable Body Plates Yes - -
Custom Graphics Yes n/a Yes
Custom Ringtones Yes n/a Yes
Real-Music Ringers - n/a Yes
Data & Network
Data Tethering - n/a Yes
WAP / Web Browser Yes n/a Yes
Input
Predictive Text Entry Yes n/a Yes
Side Keys - Yes Yes
Text Keyboard, Hardware - Yes -
Memory
Memory Card Slot - - Yes
Messaging
Email Client - n/a Yes
EMS / Picture Messaging Yes n/a -
Instant Messaging - n/a Yes
MMS - n/a Yes
Text Messaging Templates - n/a Yes
Music
Music Player - n/a Yes
Productivity
Alarm Yes n/a Yes
Calculator Yes n/a Yes
Calendar - n/a Yes
To-Do List - n/a Yes
Voice Memo - n/a Yes
Software
Games Yes n/a Yes
Java (J2ME) - n/a Yes
Voice
Headset Jack (2.5 mm) - n/a -
Push-To-Talk - - Yes
Speaker Phone - - Yes
  Siemens A56 / A56i BlackBerry 7750 Samsung SGH-A657
  X > < X > < X

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

 
Phone Siemens A56 / A56i BlackBerry 7750 Samsung SGH-A657

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