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Phone Samsung Galaxy Rush Casio G'zOne Boulder Ericsson T28 World Samsung Sidekick 4G
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 3.5" diag.
5 : 3
2" diag.
4 : 3
? 3.5" diag.
5 : 3
Display Resolution & Type 320 x 480 pixels
(~165 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
? 480 x 800 pixels
(~267 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz ? ? 60 Hz
Battery 1,750 mAh 810 mAh 500 mAh ?
Processor 1 GHz Qualcomm MSM8655 ? ? 1 GHz Samsung Hummingbird Cortex A8
RAM 768 MB ? ? ?
Storage 4 GB ? raw hardware ? raw hardware ? raw hardware
Main Camera 3 megapixel 1 megapixel - 3 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture VGA (640 x 480) ? - WVGA / 480p
Front Camera 1 megapixel - - Yes
Weight 4.2 oz
(119g)
4.9 oz
(139g)
3.14 oz
(89g)
5.7 oz
(162g)
Dimensions 4.84" x 2.36" x 0.47"
(123 x 60 x 11.9 mm)
3.9" x 2" x 0.9"
(99 x 51 x 22.9 mm)
3.9" x 2" x 0.6"
(99 x 51 x 15.2 mm)
5" x 2.42" x 0.6"
(127 x 61 x 15.2 mm)
Form Factor Slab Clamshell Flip Slide
Platform / OS Android (proprietary) (proprietary) Android
Network Bands

CDMA: 1900

CDMA: 850, 1900

GSM: 900, 1900

WCDMA: 1, 4

GSM: 850, 900, 1800, 1900

Data Technology EVDO rA EVDO rA - HSPA+ 21
Features 
Flashlight - Yes - -
GPS / Location n/a Yes - n/a
Ruggedized - Yes - -
Water-Resistant - Yes - -
Accessibility
Adjustable Text Size n/a - - n/a
Hearing Aid Compatible Yes Yes - Yes
Multiple Languages n/a Yes - n/a
TTY/TDD (Digital) Yes Yes - Yes
Alerts
Extra Display - Yes - -
Ringer Profiles - - Yes -
Connectivity
Bluetooth Yes
Classic Audio
Yes
Classic Audio
- Yes
Classic Audio
Mobile Hotspot n/a - - n/a
USB Yes Yes - Yes
Micro-USB
Wi-Fi Yes
4 (802.11 a,b,g,n)
- - Yes
4 (802.11 b,g,n)
Contacts
Picture ID n/a Yes - n/a
Ringer ID n/a Yes - n/a
Voice Dialing n/a Yes Yes n/a
Customization
Changeable Body Plates - Yes - -
Custom Graphics n/a Yes - n/a
Custom Ringtones n/a Yes Yes n/a
Real-Music Ringers n/a - - n/a
Data & Network
Data Tethering n/a Yes Yes n/a
WAP / Web Browser n/a Yes - n/a
Input
Predictive Text Entry n/a Yes - n/a
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - - Yes
Touch Screen Yes - - Yes
Memory
Memory Card Slot Yes Yes - Yes
Messaging
Email Client n/a - - n/a
EMS / Picture Messaging n/a Yes - n/a
Instant Messaging n/a - - n/a
MMS n/a Yes - n/a
Text Messaging Templates n/a Yes - n/a
Music
Headphone Jack (3.5mm) Yes - - Yes
Music Player n/a Yes - n/a
Photo & Video
DLNA - - - Yes
Productivity
Alarm n/a Yes Yes n/a
Calculator n/a Yes Yes n/a
Calendar n/a Yes - n/a
Voice Memo n/a Yes - n/a
Software
BREW n/a Yes - n/a
Games n/a Yes Yes n/a
Voice
Push-To-Talk - Yes - -
Speaker Phone Yes Yes - Yes
  Samsung Galaxy Rush Casio G'zOne Boulder Ericsson T28 World Samsung Sidekick 4G
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Phone Samsung Galaxy Rush Casio G'zOne Boulder Ericsson T28 World Samsung Sidekick 4G

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