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Phone Motorola Rival A455 Samsung SPH-N270 (Matrix Phone) Samsung SGH-R225 / SGH-R225M Samsung SGH-X640
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 2.2" diag.
4 : 3
? ? ?
Display Resolution & Type 176 x 220 pixels
(~131 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
128 x 64 pixels 128 x 160 pixels
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery 940 mAh 1,000 mAh ? 800 mAh
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera 2 megapixel - - Yes
Wide Camera - - - -
Tele Camera - - - -
Video Capture QVGA (320 x 240) - - -
Front Camera - - - -
Weight 4.48 oz
(127g)
4.66 oz
(132g)
3.35 oz
(95g)
3 oz
(85g)
Dimensions 3.82" x 1.96" x 0.73"
(97 x 50 x 18.5 mm)
4.53" x 2.28" x 0.79"
(115 x 58 x 20.1 mm)
4.33" x 1.81" x 0.93"
(110 x 46 x 23.6 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
Form Factor Slide Slide Slab Clamshell
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

CDMA: 850, 1900

AMPS: 850

GSM: 900, 1900

GSM: 900, 1800, 1900

Data Technology EVDO r0 - - GPRS
Features 
GPS / Location Yes Yes - -
Accessibility
Hearing Aid Compatible Yes
M3, T3 (mostly tele-coil compatible)
- - -
Multiple Languages Yes Yes Yes Yes
TTY/TDD (Digital) Yes - - -
Connectivity
Bluetooth Yes - - -
USB Yes
Micro-USB
- - -
Contacts
Picture ID Yes Yes - Yes
Ringer ID Yes Yes Yes Yes
Voice Dialing Yes Yes - -
Customization
Custom Graphics Yes - Yes Yes
Custom Ringtones Yes - Yes Yes
Real-Music Ringers Yes - - -
Data & Network
Data Tethering Yes - Yes -
WAP / Web Browser Yes - - Yes
Input
Predictive Text Entry - Yes Yes Yes
Side Keys Yes - - Yes
Text Keyboard, Hardware Yes - - -
Touch Screen Yes - - -
Memory
Memory Card Slot Yes - - -
Messaging
Email Client Yes - - -
EMS / Picture Messaging Yes - - Yes
Instant Messaging Yes - - -
MMS Yes - Yes Yes
Text Messaging Templates Yes - Yes Yes
Music
Headphone Jack (3.5mm) Yes - - -
Music Player Yes - - -
Productivity
Alarm Yes Yes Yes Yes
Calculator Yes Yes Yes Yes
Calendar Yes Yes Yes Yes
To-Do List - Yes - Yes
Voice Memo Yes Yes - Yes
Software
BREW Yes - - -
Games Yes - Yes Yes
Java (J2ME) - - - Yes
Voice
Headset Jack (2.5 mm) - Yes Yes Yes
Speaker Phone Yes - - Yes
  Motorola Rival A455 Samsung SPH-N270 (Matrix Phone) Samsung SGH-R225 / SGH-R225M Samsung SGH-X640
  X > < X > < X > < X

NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Motorola Rival A455 Samsung SPH-N270 (Matrix Phone) Samsung SGH-R225 / SGH-R225M Samsung SGH-X640

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