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Phone Kyocera DuraPlus BlackBerry 7750 Samsung SGH-X640 Samsung SCH-A990
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 2" diag.
4 : 3
? ? ?
Display Resolution & Type 240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
240 x 240 pixels
LCD (Color)
128 x 160 pixels
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery 1,650 mAh ? 800 mAh 1,000 mAh
Processor ? ? ? ?
RAM 128 MB ? ? ?
Storage 256 MB ? raw hardware ? raw hardware ? raw hardware
Main Camera - - Yes 3 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - - - ?
Front Camera - - - -
Weight 6.67 oz
(189g)
5.01 oz
(142g)
3 oz
(85g)
4.4 oz
(125g)
Dimensions 5.28" x 2.17" x 0.93"
(134 x 55 x 23.6 mm)
4.76" x 3.03" x 0.71"
(121 x 77 x 18 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
Form Factor Slab Slab Clamshell Clamshell
Platform / OS (proprietary) BlackBerry OS (proprietary) (proprietary)
Network Bands

CDMA: 800, 850, 1900

CDMA: 850, 1900

GSM: 900, 1800, 1900

CDMA: 850, 1900

Data Technology EVDO rA 1xRTT GPRS EVDO r0
Features 
Flashlight Yes - - Yes
GPS / Location Yes n/a - Yes
Ruggedized Yes - - -
Water-Resistant Yes - - -
Accessibility
Adjustable Text Size Yes n/a - -
Hearing Aid Compatible Yes
M4, T4 (very tele-coil compatible)
- - Yes
M3 (mostly compatible)
Multiple Languages Yes n/a Yes Yes
TTY/TDD (Digital) Yes Yes - Yes
Alerts
Extra Display - - - Yes
Ringer Profiles - Yes - -
Connectivity
Bluetooth Yes - - Yes
USB Yes
Micro-USB
Yes - Yes
Contacts
Picture ID - n/a Yes Yes
Ringer ID Yes n/a Yes Yes
Voice Dialing Yes n/a - Yes
Customization
Custom Graphics Yes n/a Yes Yes
Custom Ringtones Yes n/a Yes Yes
Real-Music Ringers - n/a - Yes
Data & Network
Data Tethering - n/a - Yes
WAP / Web Browser Yes n/a Yes Yes
Input
Predictive Text Entry Yes n/a Yes Yes
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - Yes - -
Memory
Memory Card Slot - - - Yes
Messaging
Email Client - n/a - -
EMS / Picture Messaging - n/a Yes Yes
MMS Yes n/a Yes Yes
Text Messaging Templates Yes n/a Yes Yes
Music
Music Player - n/a - Yes
Stereo Speakers - - - Yes
Photo & Video
TV Output - - - Yes
Productivity
Alarm Yes n/a Yes Yes
Calculator Yes n/a Yes Yes
Calendar Yes n/a Yes Yes
To-Do List - n/a Yes -
Voice Memo Yes n/a Yes Yes
Software
BREW Yes n/a - Yes
Games Yes n/a Yes Yes
Java (J2ME) Yes n/a Yes -
Voice
Headset Jack (2.5 mm) Yes n/a Yes -
Push-To-Talk Yes - - -
Speaker Phone Yes - Yes Yes
  Kyocera DuraPlus BlackBerry 7750 Samsung SGH-X640 Samsung SCH-A990
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Kyocera DuraPlus BlackBerry 7750 Samsung SGH-X640 Samsung SCH-A990

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