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Phone Ericsson T66 Samsung Trance SCH-U490 Palm Treo 650 (CDMA) Pantech Duo C810
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 2.1" diag.
4 : 3
? 2.2" diag.
4 : 3
Display Resolution & Type ? 176 x 220 pixels
(~134 ppi)
LCD (TFT/TFD)
320 x 320 pixels
LCD (TFT/TFD)
240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery ? ? ? 1,320 mAh
Processor ? ? 312 MHz Intel XScale PXA270 ARM 920t PXA27x
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera - 1 megapixel Yes 1 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - - QVGA (320 x 240) QVGA (320 x 240)
Front Camera - - - -
Weight 2.08 oz
(59g)
3.53 oz
(100g)
6.3 oz
(179g)
3.88 oz
(110g)
Dimensions 3.62" x 1.61" x 0.69"
(92 x 41 x 17.5 mm)
4" x 1.97" x 0.55"
(102 x 50 x 14 mm)
4.4" x 2.3" x 0.9"
(112 x 58 x 22.9 mm)
4.01" x 1.97" x 0.78"
(102 x 50 x 19.8 mm)
Form Factor Slab Slide Slab Slide
Platform / OS (proprietary) (proprietary) Palm OS Windows Mobile Standard
Network Bands

GSM: 900, 1800, 1900

CDMA: 850, 1900

CDMA: 850, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

Data Technology - 1xRTT 1xRTT HSDPA 1.8
Features 
GPS / Location - Yes n/a n/a
Accessibility
Adjustable Text Size - Yes n/a n/a
Hearing Aid Compatible - Yes
M4, T3 (mostly tele-coil compatible)
- -
Multiple Languages Yes Yes n/a n/a
TTY/TDD (Digital) - Yes - -
Alerts
Ringer Profiles Yes - - Yes
Connectivity
Bluetooth - Yes Yes Yes
Infrared (IR) - - Yes -
USB - Yes - Yes
Contacts
Picture ID - Yes n/a n/a
Ringer ID - Yes n/a n/a
Voice Dialing - Yes n/a n/a
Customization
Custom Graphics Yes Yes n/a n/a
Custom Ringtones Yes Yes n/a n/a
Real-Music Ringers - Yes n/a n/a
Data & Network
Data Tethering - Yes n/a n/a
WAP / Web Browser Yes Yes n/a n/a
Input
Predictive Text Entry Yes Yes n/a n/a
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - Yes Yes
Touch Screen - - Yes -
Memory
Memory Card Slot - Yes Yes Yes
Messaging
Email Client - - n/a n/a
EMS / Picture Messaging Yes - n/a n/a
Instant Messaging - - n/a n/a
MMS - Yes n/a n/a
Text Messaging Templates Yes Yes n/a n/a
Music
Headphone Jack (3.5mm) - Yes - -
Music Player - Yes n/a n/a
Productivity
Alarm Yes Yes n/a n/a
Calculator Yes Yes n/a n/a
Calendar Yes Yes n/a n/a
To-Do List Yes - n/a n/a
Voice Memo - Yes n/a n/a
Software
BREW - Yes n/a n/a
Games Yes Yes n/a n/a
Voice
Headset Jack (2.5 mm) - - n/a n/a
Speaker Phone - Yes Yes Yes
  Ericsson T66 Samsung Trance SCH-U490 Palm Treo 650 (CDMA) Pantech Duo C810
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Phone Ericsson T66 Samsung Trance SCH-U490 Palm Treo 650 (CDMA) Pantech Duo C810

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