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Phone Motorola i580 Samsung SGH-X640 Samsung Ace SPH-i325 Motorola Rival A455
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 2.3" diag.
4 : 3
2.2" diag.
4 : 3
Display Resolution & Type 176 x 220 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
320 x 240 pixels
(~174 ppi)
LCD (TFT/TFD)
176 x 220 pixels
(~131 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery ? 800 mAh 1,300 mAh 940 mAh
Processor ? ? 416 MHz PXA270 ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera 1 megapixel Yes 1 megapixel 2 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture ? - QVGA (320 x 240) QVGA (320 x 240)
Front Camera - - - -
Weight 4.9 oz
(139g)
3 oz
(85g)
3.9 oz
(111g)
4.48 oz
(127g)
Dimensions 3.68" x 2.2" x 1.2"
(93 x 56 x 30.5 mm)
3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
4.65" x 2.32" x 0.46"
(118 x 59 x 11.7 mm)
3.82" x 1.96" x 0.73"
(97 x 50 x 18.5 mm)
Form Factor Clamshell Clamshell Slab Slide
Platform / OS (proprietary) (proprietary) Windows Mobile Standard (proprietary)
Network Bands

iDEN: 800

GSM: 900, 1800, 1900

CDMA: 850, 1900

GSM: 900, 1800

CDMA: 850, 1900

Data Technology WiDEN GPRS EVDO r0 EVDO r0
Features 
GPS / Location Yes - n/a Yes
Ruggedized Yes - - -
Accessibility
Hearing Aid Compatible Yes
M3, T3 (mostly tele-coil compatible)
- Yes
M3, T3 (mostly tele-coil compatible)
Yes
M3, T3 (mostly tele-coil compatible)
Multiple Languages Yes Yes n/a Yes
TTY/TDD (Digital) Yes - Yes Yes
Alerts
Extra Display Yes - - -
Ringer Profiles Yes - Yes -
Connectivity
Bluetooth Yes - Yes Yes
USB - - Yes Yes
Micro-USB
Contacts
Picture ID Yes Yes n/a Yes
Ringer ID Yes Yes n/a Yes
Voice Dialing Yes - n/a Yes
Customization
Custom Graphics Yes Yes n/a Yes
Custom Ringtones Yes Yes n/a Yes
Real-Music Ringers - - n/a Yes
Data & Network
Data Tethering Yes - n/a Yes
WAP / Web Browser Yes Yes n/a Yes
Input
Predictive Text Entry Yes Yes n/a -
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - Yes Yes
Touch Screen - - - Yes
Memory
Memory Card Slot Yes - Yes Yes
Messaging
Email Client - - n/a Yes
EMS / Picture Messaging - Yes n/a Yes
Instant Messaging - - n/a Yes
MMS Yes Yes n/a Yes
Text Messaging Templates Yes Yes n/a Yes
Music
Headphone Jack (3.5mm) - - - Yes
Music Player Yes * - n/a Yes
Productivity
Alarm - Yes n/a Yes
Calculator Yes * Yes n/a Yes
Calendar Yes Yes n/a Yes
To-Do List - Yes n/a -
Voice Memo Yes Yes n/a Yes
Software
BREW - - n/a Yes
Games Yes Yes n/a Yes
Java (J2ME) Yes Yes n/a -
Voice
Headset Jack (2.5 mm) Yes Yes n/a -
Push-To-Talk Yes - - -
Speaker Phone Yes Yes Yes Yes
  * Some versions only
  Motorola i580 Samsung SGH-X640 Samsung Ace SPH-i325 Motorola Rival A455
  X > < X > < X > < X

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

 
Phone Motorola i580 Samsung SGH-X640 Samsung Ace SPH-i325 Motorola Rival A455

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