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Phone Samsung SCH-A990 Samsung Jitterbug J / SPH-A310 Samsung Galaxy Ring / Prevail 2 Siemens CX75
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Not yet released
Specifications 
Display Size ? 2.1" diag.
4 : 3
4" diag.
5 : 3
?
Display Resolution & Type 240 x 320 pixels
LCD (TFT/TFD)
176 x 220 pixels
(~134 ppi)
LCD (Color)
480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
132 x 176 pixels
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ?
Battery 1,000 mAh ? 1,750 mAh 750 mAh
Processor ? ? 1.4 GHz Qualcomm Snapdragon S2 MSM8655 ?
RAM ? ? 1 GB ?
Storage ? raw hardware ? raw hardware 4 GB ? raw hardware
Main Camera 3 megapixel - 5 megapixel 1 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? - 720p HD ?
Front Camera - - 1 megapixel -
Weight 4.4 oz
(125g)
3.99 oz
(113g)
3.4 oz
(96g)
3.46 oz
(98g)
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)
4.83" x 2.48" x 0.47"
(123 x 63 x 11.9 mm)
4.33" x 1.88" x 0.74"
(110 x 48 x 18.8 mm)
Form Factor Clamshell Clamshell Slab Slab
Platform / OS (proprietary) (proprietary) Android (proprietary)
Network Bands

CDMA: 850, 1900

CDMA: 850, 1900

CDMA: 800, 850, 1900

GSM: 900, 1800, 1900

Data Technology EVDO r0 - EVDO rA GPRS
Features 
Flashlight Yes - - -
GPS / Location Yes Yes n/a -
Accessibility
Adjustable Text Size - - n/a -
Hearing Aid Compatible Yes
M3 (mostly compatible)
Yes
M4, T4 (very tele-coil compatible)
Yes
M4 (very compatible)
-
Multiple Languages Yes - n/a Yes
TTY/TDD (Digital) Yes - Yes -
Alerts
Extra Display Yes Yes - -
Ringer Profiles - - - Yes
Connectivity
Bluetooth Yes Yes Yes Yes
Infrared (IR) - - - Yes
USB Yes - Yes Yes
Wi-Fi - - Yes
4 (802.11 a,b,g,n)
-
Contacts
Picture ID Yes - n/a Yes
Ringer ID Yes - n/a Yes
Voice Dialing Yes Yes n/a -
Customization
Custom Graphics Yes - n/a Yes
Custom Ringtones Yes - n/a Yes
Real-Music Ringers Yes - n/a -
Data & Network
Data Tethering Yes - n/a Yes
WAP / Web Browser Yes - n/a Yes
Input
Predictive Text Entry Yes - n/a Yes
Side Keys Yes Yes Yes Yes
Touch Screen - - Yes
Capacitive
-
Memory
Memory Card Slot Yes - Yes Yes
Messaging
Email Client - - n/a Yes
EMS / Picture Messaging Yes - n/a Yes
Instant Messaging - - n/a -
MMS Yes - n/a Yes
Text Messaging Templates Yes Yes n/a -
Music
Headphone Jack (3.5mm) - - Yes -
Music Player Yes - n/a Yes
Stereo Speakers Yes - - -
Photo & Video
DLNA - - Yes -
TV Output Yes - - -
Productivity
Alarm Yes - n/a Yes
Calculator Yes - n/a Yes
Calendar Yes - n/a Yes
To-Do List - - n/a Yes
Voice Memo Yes - n/a Yes
Software
BREW Yes - n/a -
Games Yes - n/a Yes
Java (J2ME) - - n/a Yes
Voice
Push-To-Talk - - - Yes
Speaker Phone Yes Yes Yes Yes
  Samsung SCH-A990 Samsung Jitterbug J / SPH-A310 Samsung Galaxy Ring / Prevail 2 Siemens CX75
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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 Samsung Galaxy Ring / Prevail 2 Siemens CX75

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