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Phone Samsung SGH-X640 Samsung SCH-A990 Motorola i450 / i455 Motorola Rival A455 Samsung Galaxy S III (global)
Current U.S. Carriers (none) (none) (none) (none) (none)
Global Availability Released Released Released Released Released
Specifications 
Display Size ? ? ? 2.2" diag.
4 : 3
4.8" diag.
16 : 9
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
240 x 320 pixels
LCD (TFT/TFD)
130 x 130 pixels
LCD (STN)
176 x 220 pixels
(~131 ppi)
LCD (TFT/TFD)
720 x 1280 pixels
(~306 ppi)
AMOLED
Display Refresh ? ? ? ? 60 Hz
Battery 800 mAh 1,000 mAh ? 940 mAh 2,100 mAh
Processor ? ? ? ? 1.4 GHz Samsung Exynos quad-core
RAM ? ? ? ? 1 GB
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware 16 GB *
Main Camera Yes 3 megapixel - 2 megapixel 8 megapixel
Wide Camera - - - - -
Tele Camera - - - - -
Video Capture - ? - QVGA (320 x 240) 1080p HD
Front Camera - - - - 2 megapixel
Weight 3 oz
(85g)
4.4 oz
(125g)
4.5 oz
(128g)
4.48 oz
(127g)
4.69 oz
(133g)
Dimensions 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)
3.5" x 2" x 1.1"
(89 x 51 x 27.9 mm)
3.82" x 1.96" x 0.73"
(97 x 50 x 18.5 mm)
5.38" x 2.78" x 0.34"
(137 x 71 x 8.6 mm)
Form Factor Clamshell Clamshell Clamshell Slide Slab
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary) Android
Network Bands

GSM: 900, 1800, 1900

CDMA: 850, 1900

iDEN: 800

CDMA: 850, 1900

WCDMA: 1, 2, 5, 8

GSM: 850, 900, 1800, 1900

Data Technology GPRS EVDO r0 - EVDO r0 HSPA+ 21
Features 
Flashlight - Yes - - Yes
GPS / Location - Yes Yes Yes n/a
Accessibility
Adjustable Text Size - - - - n/a
Hearing Aid Compatible - Yes
M3 (mostly compatible)
Yes
M3 (mostly compatible)
Yes
M3, T3 (mostly tele-coil compatible)
-
Multiple Languages Yes Yes Yes Yes n/a
TTY/TDD (Digital) - Yes Yes Yes -
Alerts
Extra Display - Yes Yes - -
Ringer Profiles - - Yes - -
Connectivity
Bluetooth - Yes - Yes Yes
MirrorLink - - - - Yes
Mobile Hotspot - - - - n/a
NFC - - - - Yes
USB - Yes Yes Yes
Micro-USB
Yes
Micro-USB
Wi-Fi - - - - Yes
Contacts
Picture ID Yes Yes Yes Yes n/a
Ringer ID Yes Yes Yes Yes n/a
Voice Dialing - Yes Yes Yes n/a
Customization
Custom Graphics Yes Yes Yes Yes n/a
Custom Ringtones Yes Yes Yes Yes n/a
Real-Music Ringers - Yes Yes * Yes n/a
Data & Network
Data Tethering - Yes Yes Yes n/a
WAP / Web Browser Yes Yes Yes Yes n/a
Input
Predictive Text Entry Yes Yes Yes - n/a
Side Keys Yes Yes Yes Yes Yes
Text Keyboard, Hardware - - - Yes -
Touch Screen - - - Yes Yes
Capacitive
Memory
Memory Card Slot - Yes - Yes Yes
Messaging
Email Client - - - Yes n/a
EMS / Picture Messaging Yes Yes - Yes n/a
Instant Messaging - - - Yes n/a
MMS Yes Yes Yes Yes n/a
Text Messaging Templates Yes Yes Yes Yes n/a
Music
FM Radio - - - - Yes
Headphone Jack (3.5mm) - - - Yes Yes
Music Player - Yes - Yes n/a
Stereo Speakers - Yes - - -
Photo & Video
DLNA - - - - Yes
TV Output - Yes - - Yes
Productivity
Alarm Yes Yes - Yes n/a
Calculator Yes Yes - Yes n/a
Calendar Yes Yes Yes Yes n/a
To-Do List Yes - - - n/a
Voice Memo Yes Yes Yes Yes n/a
Software
BREW - Yes - Yes n/a
Games Yes Yes Yes Yes n/a
Java (J2ME) Yes - Yes - n/a
Voice
HD Voice - - - - Yes
Headset Jack (2.5 mm) Yes - Yes - n/a
Push-To-Talk - - Yes - -
Speaker Phone Yes Yes Yes Yes Yes
  * Some versions only
  Samsung SGH-X640 Samsung SCH-A990 Motorola i450 / i455 Motorola Rival A455 Samsung Galaxy S III (global)
  X > < X > < X > < X > < X

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

 
Phone Samsung SGH-X640 Samsung SCH-A990 Motorola i450 / i455 Motorola Rival A455 Samsung Galaxy S III (global)

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