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Phone Motorola v66i Samsung SGH-X820 Samsung Character Motorola Rival A455
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 2.8" diag.
4 : 3
2.2" diag.
4 : 3
Display Resolution & Type ? 220 x 176 pixels
LCD (TFT/TFD)
240 x 320 pixels
(~143 ppi)
LCD (TFT/TFD)
176 x 220 pixels
(~131 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery ? 650 mAh 1,000 mAh 940 mAh
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera - 2 megapixel 1 megapixel 2 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - ? - QVGA (320 x 240)
Front Camera - - - -
Weight 2.79 oz
(79g)
2.33 oz
(66g)
4.23 oz
(120g)
4.48 oz
(127g)
Dimensions 3.3" x 1.7" x 0.83"
(84 x 43 x 21.1 mm)
4.45" x 1.97" x 0.27"
(113 x 50 x 6.9 mm)
4.2" x 2.18" x 0.58"
(107 x 55 x 14.7 mm)
3.82" x 1.96" x 0.73"
(97 x 50 x 18.5 mm)
Form Factor Clamshell Slab Slide Slide
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 1900

GSM: 900, 1800, 1900

CDMA: 850, 1900

CDMA: 850, 1900

Data Technology GPRS EDGE 1xRTT EVDO r0
Features 
GPS / Location - - Yes Yes
Accessibility
Hearing Aid Compatible - - Yes Yes
Multiple Languages Yes Yes Yes Yes
TTY/TDD (Digital) - - Yes Yes
Connectivity
Bluetooth - Yes Yes Yes
USB Yes Yes Yes
Micro-USB
Yes
Micro-USB
Contacts
Picture ID - Yes Yes Yes
Ringer ID Yes Yes Yes Yes
Voice Dialing Yes - Yes Yes
Customization
Changeable Body Plates Yes - - -
Custom Graphics - Yes Yes Yes
Custom Ringtones Yes Yes Yes Yes
Real-Music Ringers - Yes Yes Yes
Data & Network
Data Tethering Yes - - Yes
External Antenna Jack - 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 Yes
Touch Screen - - Yes Yes
Memory
Memory Card Slot - - Yes Yes
Messaging
Email Client - Yes - Yes
EMS / Picture Messaging Yes Yes - Yes
Instant Messaging - - - Yes
MMS - Yes Yes Yes
Text Messaging Templates - Yes Yes Yes
Music
Headphone Jack (3.5mm) - - Yes Yes
Music Player - - Yes Yes
Photo & Video
TV Output - Yes - -
Productivity
Alarm Yes Yes Yes Yes
Calculator Yes Yes Yes Yes
Calendar Yes Yes Yes Yes
To-Do List - Yes - -
Voice Memo Yes Yes Yes Yes
Software
BREW - - Yes Yes
Games Yes Yes Yes Yes
Java (J2ME) Yes Yes - -
Voice
Headset Jack (2.5 mm) Yes - - -
Speaker Phone - Yes Yes Yes
  Motorola v66i Samsung SGH-X820 Samsung Character Motorola Rival A455
  X > < X > < X > < X

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

 
Phone Motorola v66i Samsung SGH-X820 Samsung Character Motorola Rival A455

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