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Phone Samsung SCH-A990 Motorola Rival A455 Sharp Sidekick LX 2009 Samsung Wafer R510
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 2.2" diag.
4 : 3
3.2" diag.
16 : 9
1.9" diag.
4 : 3
Display Resolution & Type 240 x 320 pixels
LCD (TFT/TFD)
176 x 220 pixels
(~131 ppi)
LCD (TFT/TFD)
854 x 480 pixels
(~306 ppi)
LCD (TFT/TFD)
220 x 176 pixels
(~148 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery 1,000 mAh 940 mAh 1,250 mAh 800 mAh
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera 3 megapixel 2 megapixel 3 megapixel 1 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? QVGA (320 x 240) QVGA (320 x 240) ?
Front Camera - - - -
Weight 4.4 oz
(125g)
4.48 oz
(127g)
5.78 oz
(164g)
2.47 oz
(70g)
Dimensions 3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
3.82" x 1.96" x 0.73"
(97 x 50 x 18.5 mm)
5.12" x 2.36" x 0.63"
(130 x 60 x 16 mm)
4.45" x 1.97" x 0.33"
(113 x 50 x 8.4 mm)
Form Factor Clamshell Slide Swivel Slab
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

CDMA: 850, 1900

WCDMA: 1, 4

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

Data Technology EVDO r0 EVDO r0 HSPA 7.2 EVDO r0
Features 
Flashlight Yes - - -
GPS / Location Yes Yes Yes Yes
Accessibility
Adjustable Text Size - - Yes -
Hearing Aid Compatible Yes
M3 (mostly compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3 (mostly compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Multiple Languages Yes Yes Yes Yes
TTY/TDD (Digital) Yes Yes - Yes
Alerts
Extra Display Yes - - -
Ringer Profiles - - Yes -
Connectivity
Bluetooth Yes Yes Yes Yes
USB Yes Yes
Micro-USB
Yes -
Contacts
Picture ID Yes Yes Yes Yes
Ringer ID Yes Yes Yes -
Voice Dialing Yes Yes - Yes
Customization
Custom Graphics Yes Yes Yes Yes
Custom Ringtones Yes Yes Yes Yes
Real-Music Ringers Yes Yes Yes -
Data & Network
Data Tethering Yes Yes - -
WAP / Web Browser Yes Yes Yes Yes
Input
Predictive Text Entry Yes - - Yes
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - Yes Yes -
Touch Screen - Yes - -
Memory
Memory Card Slot Yes Yes Yes Yes
Messaging
Email Client - Yes Yes -
EMS / Picture Messaging Yes Yes - -
Instant Messaging - Yes Yes -
MMS Yes Yes Yes Yes
Text Messaging Templates Yes Yes Yes -
Music
Headphone Jack (3.5mm) - Yes Yes -
Music Player Yes Yes Yes Yes
Stereo Speakers Yes - - Yes
Photo & Video
TV Output Yes - - -
Productivity
Alarm Yes Yes Yes Yes
Calculator Yes Yes - Yes
Calendar Yes Yes Yes Yes
To-Do List - - Yes -
Voice Memo Yes Yes - Yes
Software
BREW Yes Yes - Yes
Games Yes Yes Yes Yes
Java (J2ME) - - Yes -
Voice
Speaker Phone Yes Yes Yes Yes
  Samsung SCH-A990 Motorola Rival A455 Sharp Sidekick LX 2009 Samsung Wafer R510
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Phone Samsung SCH-A990 Motorola Rival A455 Sharp Sidekick LX 2009 Samsung Wafer R510

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