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Phone Casio G'zOne Rock Motorola Sidekick Slide Sanyo RL-4920 Motorola i450 / i455
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 2.1" diag.
4 : 3
? ? ?
Display Resolution & Type 240 x 320 pixels
(~190 ppi)
LCD (TFT/TFD)
320 x 240 pixels
LCD (TFT/TFD)
128 x 112 pixels
LCD (Color)
130 x 130 pixels
LCD (STN)
Display Refresh ? ? ? ?
Battery 1,150 mAh ? 1,700 mAh ?
Processor ? 225 MHz TI OMAP 850 ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera 2 megapixel 1 megapixel - -
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? - - -
Front Camera - - - -
Weight 4.4 oz
(125g)
5.3 oz
(150g)
4.03 oz
(114g)
4.5 oz
(128g)
Dimensions 4.1" x 2" x 0.9"
(104 x 51 x 22.9 mm)
4.65" x 2.44" x 0.69"
(118 x 62 x 17.5 mm)
4.22" x 1.85" x 0.85"
(107 x 47 x 21.6 mm)
3.5" x 2" x 1.1"
(89 x 51 x 27.9 mm)
Form Factor Clamshell Slide Slab Clamshell
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

iDEN: 800

Data Technology EVDO rA EDGE 1xRTT -
Features 
Flashlight Yes - - -
GPS / Location Yes - Yes Yes
Ruggedized Yes - - -
Water-Resistant Yes - - -
Accessibility
Adjustable Text Size - Yes - -
Hearing Aid Compatible Yes
M4, T4 (very tele-coil compatible)
- - Yes
M3 (mostly compatible)
Multiple Languages Yes - Yes Yes
TTY/TDD (Digital) Yes - Yes Yes
Alerts
Extra Display Yes - - Yes
Ringer Profiles - Yes - Yes
Connectivity
Bluetooth Yes Yes - -
USB Yes Yes Yes Yes
Contacts
Picture ID Yes Yes Yes Yes
Ringer ID Yes Yes Yes Yes
Voice Dialing Yes - Yes Yes
Customization
Custom Graphics Yes Yes Yes Yes
Custom Ringtones Yes Yes Yes Yes
Real-Music Ringers Yes Yes - Yes *
Data & Network
Data Tethering Yes - - Yes
WAP / Web Browser Yes Yes Yes Yes
Input
Predictive Text Entry Yes - Yes Yes
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - Yes - -
Memory
Memory Card Slot Yes Yes - -
Messaging
Email Client Yes Yes - -
Instant Messaging Yes Yes - -
MMS Yes Yes - Yes
Text Messaging Templates Yes - - Yes
Music
Music Player Yes Yes - -
Productivity
Alarm Yes Yes Yes -
Calculator Yes - Yes -
Calendar Yes Yes Yes Yes
To-Do List - Yes Yes -
Voice Memo Yes - Yes Yes
Software
BREW Yes - - -
Games Yes Yes Yes Yes
Java (J2ME) - Yes Yes Yes
Voice
Call Screening - - Yes -
Headset Jack (2.5 mm) Yes Yes Yes Yes
Push-To-Talk Yes - Yes Yes
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  Casio G'zOne Rock Motorola Sidekick Slide Sanyo RL-4920 Motorola i450 / i455
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Casio G'zOne Rock Motorola Sidekick Slide Sanyo RL-4920 Motorola i450 / i455

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