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Phone Samsung SGH-X820 Motorola ROKR E1 Motorola i450 / i455
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size ? ? ?
Display Resolution & Type 220 x 176 pixels
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
130 x 130 pixels
LCD (STN)
Display Refresh ? ? ?
Battery 650 mAh ? ?
Processor ? ? ?
RAM ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware
Main Camera 2 megapixel Yes -
Wide Camera - - -
Tele Camera - - -
Video Capture ? ? -
Front Camera - - -
Weight 2.33 oz
(66g)
3.77 oz
(107g)
4.5 oz
(128g)
Dimensions 4.45" x 1.97" x 0.27"
(113 x 50 x 6.9 mm)
4.25" x 1.81" x 0.8"
(108 x 46 x 20.3 mm)
3.5" x 2" x 1.1"
(89 x 51 x 27.9 mm)
Form Factor Slab Slab Clamshell
Platform / OS (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 900, 1800, 1900

GSM: 850, 1800, 1900

*

iDEN: 800

Data Technology EDGE GPRS -
Features 
GPS / Location - - Yes
Accessibility
Hearing Aid Compatible - - Yes
M3 (mostly compatible)
Multiple Languages Yes Yes Yes
TTY/TDD (Digital) - Yes Yes
Alerts
Extra Display - - Yes
Ringer Profiles - Yes Yes
Connectivity
Bluetooth Yes Yes -
USB Yes Yes Yes
Contacts
Picture ID Yes Yes Yes
Ringer ID Yes Yes Yes
Voice Dialing - Yes Yes
Customization
Custom Graphics Yes Yes Yes
Custom Ringtones 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
Input
Predictive Text Entry Yes Yes Yes
Side Keys Yes Yes Yes
Memory
Memory Card Slot - Yes -
Messaging
Email Client Yes Yes -
EMS / Picture Messaging Yes Yes -
Instant Messaging - Yes -
MMS Yes Yes Yes
Text Messaging Templates Yes - Yes
Music
Music Player - Yes -
Stereo Speakers - Yes -
Photo & Video
TV Output Yes - -
Productivity
Alarm Yes Yes -
Calculator Yes Yes -
Calendar Yes Yes Yes
To-Do List Yes - -
Voice Memo Yes Yes Yes
Software
Games Yes Yes Yes
Java (J2ME) Yes Yes Yes
Voice
Headset Jack (2.5 mm) - Yes Yes
Push-To-Talk - - Yes
Speaker Phone Yes Yes Yes
  * Some versions only
  Samsung SGH-X820 Motorola ROKR E1 Motorola i450 / i455
  X > < X > < X

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

 
Phone Samsung SGH-X820 Motorola ROKR E1 Motorola i450 / i455

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