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Phone Samsung SCH-A990 Samsung Jitterbug J / SPH-A310 LG AX-490 BlackBerry 7750
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 2.1" diag.
4 : 3
? ?
Display Resolution & Type 240 x 320 pixels
LCD (TFT/TFD)
176 x 220 pixels
(~134 ppi)
LCD (Color)
128 x 160 pixels
LCD (TFT/TFD)
240 x 240 pixels
LCD (Color)
Display Refresh ? ? ? ?
Battery 1,000 mAh ? 1,100 mAh ?
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera 3 megapixel - Yes -
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? - - -
Front Camera - - - -
Weight 4.4 oz
(125g)
3.99 oz
(113g)
3.79 oz
(107g)
5.01 oz
(142g)
Dimensions 3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
3.87" x 2.16" x 0.97"
(98 x 55 x 24.6 mm)
3.74" x 1.92" x 1"
(95 x 49 x 25.4 mm)
4.76" x 3.03" x 0.71"
(121 x 77 x 18 mm)
Form Factor Clamshell Clamshell Clamshell Slab
Platform / OS (proprietary) (proprietary) (proprietary) BlackBerry OS
Network Bands

CDMA: 850, 1900

CDMA: 850, 1900

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

Data Technology EVDO r0 - 1xRTT 1xRTT
Features 
Flashlight Yes - - -
GPS / Location Yes Yes Yes n/a
Accessibility
Hearing Aid Compatible Yes
M3 (mostly compatible)
Yes
M4, T4 (very tele-coil compatible)
Yes
M3 (mostly compatible)
-
Multiple Languages Yes - Yes n/a
TTY/TDD (Digital) Yes - Yes Yes
Alerts
Extra Display Yes Yes Yes -
Ringer Profiles - - - Yes
Connectivity
Bluetooth Yes Yes Yes -
USB Yes - Yes Yes
Contacts
Picture ID Yes - Yes n/a
Ringer ID Yes - Yes n/a
Voice Dialing Yes Yes Yes n/a
Customization
Custom Graphics Yes - Yes n/a
Custom Ringtones Yes - Yes n/a
Real-Music Ringers Yes - Yes n/a
Data & Network
Data Tethering Yes - Yes n/a
WAP / Web Browser Yes - Yes n/a
Input
Predictive Text Entry Yes - - n/a
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - Yes Yes
Memory
Memory Card Slot Yes - - -
Messaging
Email Client - - - n/a
EMS / Picture Messaging Yes - - n/a
MMS Yes - Yes n/a
Text Messaging Templates Yes Yes Yes n/a
Music
Music Player Yes - - n/a
Stereo Speakers Yes - Yes -
Photo & Video
TV Output Yes - - -
Productivity
Alarm Yes - Yes n/a
Calculator Yes - Yes n/a
Calendar Yes - Yes n/a
To-Do List - - - n/a
Voice Memo Yes - Yes n/a
Software
BREW Yes - Yes n/a
Games Yes - Yes n/a
Java (J2ME) - - - n/a
Voice
Headset Jack (2.5 mm) - - Yes n/a
Speaker Phone Yes Yes Yes -
  Samsung SCH-A990 Samsung Jitterbug J / SPH-A310 LG AX-490 BlackBerry 7750
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SCH-A990 Samsung Jitterbug J / SPH-A310 LG AX-490 BlackBerry 7750

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