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Phone Samsung Trance SCH-U490 HTC Amaze 4G Pantech Duo C810 Palm Pre (CDMA)
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 2.1" diag.
4 : 3
4.3" diag.
16 : 9
2.2" diag.
4 : 3
3.1" diag.
5 : 3
Display Resolution & Type 176 x 220 pixels
(~134 ppi)
LCD (TFT/TFD)
540 x 960 pixels
(~256 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
320 x 480 pixels
(~186 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz ? ?
Battery ? 1,730 mAh 1,320 mAh 1,150 mAh
Processor ? 1.5 GHz Qualcomm Snapdragon S3 dual-core ARM 920t PXA27x TI OMAP 3430
RAM ? 1 GB ? ?
Storage ? raw hardware 16 GB ? raw hardware ? raw hardware
Main Camera 1 megapixel 8 megapixel 1 megapixel 3 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - 1080p HD QVGA (320 x 240) ?
Front Camera - 2 megapixel - -
Weight 3.53 oz
(100g)
6.1 oz
(173g)
3.88 oz
(110g)
4.76 oz
(135g)
Dimensions 4" x 1.97" x 0.55"
(102 x 50 x 14 mm)
5.12" x 2.58" x 0.46"
(130 x 66 x 11.7 mm)
4.01" x 1.97" x 0.78"
(102 x 50 x 19.8 mm)
3.9" x 2.3" x 0.67"
(99 x 58 x 17 mm)
Form Factor Slide Slab Slide Slide
Platform / OS (proprietary) Android Windows Mobile Standard webOS
Network Bands

CDMA: 850, 1900

WCDMA: 1, 2, 4, 5

GSM: 850, 900, 1800, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

Data Technology 1xRTT HSPA+ 42 HSDPA 1.8 EVDO rA
Features 
Flashlight - Yes - -
GPS / Location Yes n/a n/a n/a
Accessibility
Adjustable Text Size Yes n/a n/a n/a
Hearing Aid Compatible Yes
M4, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
- Yes
M4 (very compatible)
Multiple Languages Yes n/a n/a n/a
TTY/TDD (Digital) Yes Yes - Yes
Alerts
Ringer Profiles - - Yes -
Connectivity
Bluetooth Yes Yes Yes Yes
Mobile Hotspot - n/a n/a n/a
NFC - Yes - -
USB Yes Yes Yes Yes
Micro-USB
Wi-Fi - Yes
4 (802.11 a,b,g,n)
- Yes
802.11 b,g
Contacts
Picture ID Yes n/a n/a n/a
Ringer ID Yes n/a n/a n/a
Voice Dialing Yes n/a n/a n/a
Customization
Custom Graphics Yes n/a n/a n/a
Custom Ringtones Yes n/a n/a n/a
Real-Music Ringers Yes n/a n/a n/a
Data & Network
Data Tethering Yes n/a n/a n/a
WAP / Web Browser Yes n/a n/a n/a
Input
Predictive Text Entry Yes n/a n/a n/a
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - Yes Yes
Touch Screen - Yes
Capacitive
- Yes
Capacitive
Memory
Memory Card Slot Yes Yes Yes -
Messaging
Email Client - n/a n/a n/a
Instant Messaging - n/a n/a n/a
MMS Yes n/a n/a n/a
Text Messaging Templates Yes n/a n/a n/a
Music
FM Radio - Yes - -
Headphone Jack (3.5mm) Yes Yes - Yes
Music Player Yes n/a n/a n/a
Photo & Video
DLNA - Yes - -
TV Output - Yes - -
Productivity
Alarm Yes n/a n/a n/a
Calculator Yes n/a n/a n/a
Calendar Yes n/a n/a n/a
To-Do List - n/a n/a n/a
Voice Memo Yes n/a n/a n/a
Software
BREW Yes n/a n/a n/a
Games Yes n/a n/a n/a
Voice
Speaker Phone Yes Yes Yes Yes
  Samsung Trance SCH-U490 HTC Amaze 4G Pantech Duo C810 Palm Pre (CDMA)
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Phone Samsung Trance SCH-U490 HTC Amaze 4G Pantech Duo C810 Palm Pre (CDMA)

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