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Phone Samsung SPH-N270 (Matrix Phone) Siemens A56 / A56i Samsung Galaxy Ring / Prevail 2 Samsung SGH-X640 Samsung SCH-A990
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? 4" diag.
5 : 3
? ?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
101 x 64 pixels 480 x 800 pixels
(~233 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz ? ?
Battery 1,000 mAh 700 mAh 1,750 mAh 800 mAh 1,000 mAh
Processor ? ? 1.4 GHz Qualcomm Snapdragon S2 MSM8655 ? ?
RAM ? ? 1 GB ? ?
Storage ? raw hardware ? raw hardware 4 GB ? raw hardware ? raw hardware
Main Camera - - 5 megapixel Yes 3 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - - 720p HD - ?
Front Camera - - 1 megapixel - -
Weight 4.66 oz
(132g)
3 oz
(85g)
3.4 oz
(96g)
3 oz
(85g)
4.4 oz
(125g)
Dimensions 4.53" x 2.28" x 0.79"
(115 x 58 x 20.1 mm)
4" x 1.7" x 0.8"
(102 x 43 x 20.3 mm)
4.83" x 2.48" x 0.47"
(123 x 63 x 11.9 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
3.8" x 1.88" x 0.82"
(97 x 48 x 20.8 mm)
Form Factor Slide Slab Slab Clamshell Clamshell
Platform / OS (proprietary) (proprietary) Android (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

AMPS: 850

GSM: 850, 1900

CDMA: 800, 850, 1900

GSM: 900, 1800, 1900

CDMA: 850, 1900

Data Technology - - EVDO rA GPRS EVDO r0
Features 
Flashlight - - - - Yes
GPS / Location Yes Yes n/a - Yes
Accessibility
Adjustable Text Size - - n/a - -
Hearing Aid Compatible - - Yes
M4 (very compatible)
- Yes
M3 (mostly compatible)
Multiple Languages Yes - n/a Yes Yes
TTY/TDD (Digital) - Yes Yes - Yes
Alerts
Extra Display - - - - Yes
Ringer Profiles - Yes - - -
Connectivity
Bluetooth - - Yes - Yes
USB - - Yes - Yes
Wi-Fi - - Yes
4 (802.11 a,b,g,n)
- -
Contacts
Picture ID Yes Yes n/a Yes Yes
Ringer ID Yes Yes n/a Yes Yes
Voice Dialing Yes - n/a - Yes
Customization
Changeable Body Plates - Yes - - -
Custom Graphics - Yes n/a Yes Yes
Custom Ringtones - Yes n/a Yes Yes
Real-Music Ringers - - n/a - Yes
Data & Network
Data Tethering - - n/a - Yes
WAP / Web Browser - Yes n/a Yes Yes
Input
Predictive Text Entry Yes Yes n/a Yes 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 Yes Yes
Instant Messaging - - n/a - -
MMS - - n/a Yes Yes
Text Messaging Templates - - n/a Yes Yes
Music
Headphone Jack (3.5mm) - - Yes - -
Music Player - - n/a - Yes
Stereo Speakers - - - - Yes
Photo & Video
DLNA - - Yes - -
TV Output - - - - Yes
Productivity
Alarm Yes Yes n/a Yes Yes
Calculator Yes Yes n/a Yes Yes
Calendar Yes - n/a Yes Yes
To-Do List Yes - n/a Yes -
Voice Memo Yes - n/a Yes Yes
Software
BREW - - n/a - Yes
Games - Yes n/a Yes Yes
Java (J2ME) - - n/a Yes -
Voice
Headset Jack (2.5 mm) Yes - n/a Yes -
Speaker Phone - - Yes Yes Yes
  Samsung SPH-N270 (Matrix Phone) Siemens A56 / A56i Samsung Galaxy Ring / Prevail 2 Samsung SGH-X640 Samsung SCH-A990
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Phone Samsung SPH-N270 (Matrix Phone) Siemens A56 / A56i Samsung Galaxy Ring / Prevail 2 Samsung SGH-X640 Samsung SCH-A990

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