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Phone Samsung Jitterbug J / SPH-A310 Samsung SCH-A990 Samsung Galaxy Ring / Prevail 2 Samsung SPH-N270 (Matrix Phone)
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 2.1" diag.
4 : 3
? 4" diag.
5 : 3
?
Display Resolution & Type 176 x 220 pixels
(~134 ppi)
LCD (Color)
240 x 320 pixels
LCD (TFT/TFD)
480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ?
Battery ? 1,000 mAh 1,750 mAh 1,000 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 -
Wide Camera - - - -
Tele Camera - - - -
Video Capture - ? 720p HD -
Front Camera - - 1 megapixel -
Weight 3.99 oz
(113g)
4.4 oz
(125g)
3.4 oz
(96g)
4.66 oz
(132g)
Dimensions 3.87" x 2.16" x 0.97"
(98 x 55 x 24.6 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
4.83" x 2.48" x 0.47"
(123 x 63 x 11.9 mm)
4.53" x 2.28" x 0.79"
(115 x 58 x 20.1 mm)
Form Factor Clamshell Clamshell Slab Slide
Platform / OS (proprietary) (proprietary) Android (proprietary)
Network Bands

CDMA: 850, 1900

CDMA: 850, 1900

CDMA: 800, 850, 1900

CDMA: 850, 1900

AMPS: 850

Data Technology - EVDO r0 EVDO rA -
Features 
Flashlight - Yes - -
GPS / Location Yes Yes n/a Yes
Accessibility
Adjustable Text Size - - n/a -
Hearing Aid Compatible Yes
M4, T4 (very tele-coil compatible)
Yes
M3 (mostly compatible)
Yes
M4 (very compatible)
-
Multiple Languages - Yes n/a Yes
TTY/TDD (Digital) - Yes Yes -
Alerts
Extra Display Yes Yes - -
Connectivity
Bluetooth Yes Yes Yes -
USB - 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 Yes
Customization
Custom Graphics - Yes n/a -
Custom Ringtones - Yes n/a -
Real-Music Ringers - Yes n/a -
Data & Network
Data Tethering - Yes n/a -
WAP / Web Browser - Yes n/a -
Input
Predictive Text Entry - Yes n/a Yes
Side Keys Yes Yes Yes -
Touch Screen - - Yes
Capacitive
-
Memory
Memory Card Slot - Yes Yes -
Messaging
Email Client - - n/a -
EMS / Picture Messaging - Yes n/a -
Instant Messaging - - n/a -
MMS - Yes n/a -
Text Messaging Templates Yes Yes n/a -
Music
Headphone Jack (3.5mm) - - Yes -
Music Player - Yes n/a -
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 -
Voice
Headset Jack (2.5 mm) - - n/a Yes
Speaker Phone Yes Yes Yes -
  Samsung Jitterbug J / SPH-A310 Samsung SCH-A990 Samsung Galaxy Ring / Prevail 2 Samsung SPH-N270 (Matrix Phone)
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung Jitterbug J / SPH-A310 Samsung SCH-A990 Samsung Galaxy Ring / Prevail 2 Samsung SPH-N270 (Matrix Phone)

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