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Phone Ericsson T66 BlackBerry 7750 Motorola i450 / i455
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size ? ? ?
Display Resolution & Type ? 240 x 240 pixels
LCD (Color)
130 x 130 pixels
LCD (STN)
Display Refresh ? ? ?
Battery ? ? ?
Processor ? ? ?
RAM ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware
Main Camera - - -
Wide Camera - - -
Tele Camera - - -
Video Capture - - -
Front Camera - - -
Weight 2.08 oz
(59g)
5.01 oz
(142g)
4.5 oz
(128g)
Dimensions 3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
4.76" x 3.03" x 0.71"
(121 x 77 x 18 mm)
3.5" x 2" x 1.1"
(89 x 51 x 27.9 mm)
Form Factor Slab Slab Clamshell
Platform / OS (proprietary) BlackBerry OS (proprietary)
Network Bands

GSM: 900, 1800, 1900

CDMA: 850, 1900

iDEN: 800

Data Technology - 1xRTT -
Features 
GPS / Location - n/a Yes
Accessibility
Hearing Aid Compatible - - Yes
M3 (mostly compatible)
Multiple Languages Yes n/a Yes
TTY/TDD (Digital) - Yes Yes
Alerts
Extra Display - - Yes
Ringer Profiles Yes Yes Yes
Connectivity
USB - Yes Yes
Contacts
Picture ID - n/a Yes
Ringer ID - n/a Yes
Voice Dialing - n/a Yes
Customization
Custom Graphics Yes n/a Yes
Custom Ringtones Yes n/a Yes
Real-Music Ringers - n/a Yes *
Data & Network
Data Tethering - n/a Yes
WAP / Web Browser Yes n/a Yes
Input
Predictive Text Entry Yes n/a Yes
Side Keys Yes Yes Yes
Text Keyboard, Hardware - Yes -
Messaging
Email Client - n/a -
EMS / Picture Messaging Yes n/a -
MMS - n/a Yes
Text Messaging Templates Yes n/a Yes
Productivity
Alarm Yes n/a -
Calculator Yes n/a -
Calendar Yes n/a Yes
To-Do List Yes n/a -
Voice Memo - n/a Yes
Software
Games Yes n/a Yes
Java (J2ME) - n/a Yes
Voice
Headset Jack (2.5 mm) - n/a Yes
Push-To-Talk - - Yes
Speaker Phone - - Yes
  * Some versions only
  Ericsson T66 BlackBerry 7750 Motorola i450 / i455
  X > < X > < X

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

 
Phone Ericsson T66 BlackBerry 7750 Motorola i450 / i455

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