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Phone Samsung SCH-A990 Samsung SGH-A157 HTC MDA Compact / xda II mini / JAM (Magician) Kyocera 3225 Casio G'zOne Boulder
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? 1.8" diag.
4 : 3
? ? 2" diag.
4 : 3
Display Resolution & Type 240 x 320 pixels
LCD (TFT/TFD)
128 x 160 pixels
(~116 ppi)
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
?
LCD (Grayscale)
240 x 320 pixels
(~200 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? ? ?
Battery 1,000 mAh 800 mAh 1,200 mAh ? 810 mAh
Processor ? ? 416 MHz Intel xScale ? ?
RAM ? ? ? ? ?
Storage ? raw hardware 256 MB ? raw hardware ? raw hardware ? raw hardware
Main Camera 3 megapixel - 1 megapixel - 1 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture ? - ? - ?
Front Camera - - - - -
Weight 4.4 oz
(125g)
2.99 oz
(85g)
5.29 oz
(150g)
4.23 oz
(120g)
4.9 oz
(139g)
Dimensions 3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
3.83" x 1.84" x 0.65"
(97 x 47 x 16.5 mm)
4.25" x 2.28" x 0.72"
(108 x 58 x 18.3 mm)
3.4" x 1.97" x 1.02"
(86 x 50 x 25.9 mm)
3.9" x 2" x 0.9"
(99 x 51 x 22.9 mm)
Form Factor Clamshell Clamshell Slab Slab Clamshell
Platform / OS (proprietary) (proprietary) Windows Mobile Professional (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

WCDMA: 2, 5

GSM: 850, 900, 1800, 1900

GSM: 850, 1800, 1900

*

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

Data Technology EVDO r0 ? GPRS 1xRTT EVDO rA
Features 
Flashlight Yes - - - Yes
GPS / Location Yes Yes n/a Yes Yes
Ruggedized - - - - Yes
Water-Resistant - - - - Yes
Accessibility
Adjustable Text Size - Yes n/a - -
Hearing Aid Compatible Yes
M3 (mostly compatible)
Yes
M4 (very compatible)
- - Yes
M4, T4 (very tele-coil compatible)
Multiple Languages Yes Yes n/a Yes Yes
TTY/TDD (Digital) Yes Yes - Yes Yes
Alerts
Extra Display Yes - - - Yes
Ringer Profiles - Yes - - -
Connectivity
Bluetooth Yes - Yes - Yes
Infrared (IR) - - Yes - -
USB Yes Yes
Micro-USB
Yes
Mini-USB
- Yes
Contacts
Picture ID Yes Yes n/a - Yes
Ringer ID Yes Yes n/a - Yes
Voice Dialing Yes - n/a Yes Yes
Customization
Changeable Body Plates - - - - Yes
Custom Graphics Yes Yes n/a Yes Yes
Custom Ringtones Yes Yes n/a Yes Yes
Real-Music Ringers Yes Yes n/a - -
Data & Network
Data Tethering Yes - n/a Yes Yes
WAP / Web Browser Yes Yes n/a Yes Yes
Input
Predictive Text Entry Yes Yes n/a Yes Yes
Side Keys Yes - Yes - Yes
Touch Screen - - Yes - -
Memory
Memory Card Slot Yes - Yes - Yes
Messaging
Email Client - - n/a - -
EMS / Picture Messaging Yes - n/a Yes Yes
MMS Yes Yes n/a - Yes
Text Messaging Templates Yes Yes n/a - Yes
Music
Music Player Yes - n/a - Yes
Stereo Speakers Yes - - - -
Photo & Video
TV Output Yes - - - -
Productivity
Alarm Yes Yes n/a Yes Yes
Calculator Yes Yes n/a Yes Yes
Calendar Yes Yes n/a Yes Yes
To-Do List - Yes n/a - -
Voice Memo Yes Yes n/a - Yes
Software
BREW Yes - n/a Yes Yes
Games Yes - n/a Yes Yes
Voice
Headset Jack (2.5 mm) - - n/a Yes -
Push-To-Talk - - - - Yes
Speaker Phone Yes Yes Yes Yes Yes
  Samsung SCH-A990 Samsung SGH-A157 HTC MDA Compact / xda II mini / JAM (Magician) Kyocera 3225 Casio G'zOne Boulder
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SCH-A990 Samsung SGH-A157 HTC MDA Compact / xda II mini / JAM (Magician) Kyocera 3225 Casio G'zOne Boulder

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