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Phone Samsung SCH-A310 Samsung Craft SCH-R900 Samsung Instinct S30
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size ? 3.3" diag.
5 : 3
3.2" diag.
16 : 9
Display Resolution & Type 128 x 128 pixels
LCD (Grayscale)
480 x 800 pixels
(~283 ppi)
AMOLED
240 x 432 pixels
(~154 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ?
Battery ? 1,500 mAh 1,000 mAh
Processor ? ? ?
RAM ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware
Main Camera - 3 megapixel 2 megapixel
Wide Camera - - -
Tele Camera - - -
Video Capture - VGA (640 x 480) ?
Front Camera - - -
Weight 3.2 oz
(91g)
5.29 oz
(150g)
3.88 oz
(110g)
Dimensions 3.43" x 1.89" x 0.87"
(87 x 48 x 22.1 mm)
4.5" x 2.2" x 0.6"
(114 x 56 x 15.2 mm)
4.61" x 2.16" x 0.52"
(117 x 55 x 13.2 mm)
Form Factor Clamshell Slide Slab
Platform / OS (proprietary) (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

AMPS: 850

4G LTE: 2, 4

CDMA: 1700, 1900

CDMA: 850, 1900

Data Technology 1xRTT LTE (Cat 3) EVDO r0
Features 
GPS / Location Yes Yes Yes
Accessibility
Hearing Aid Compatible - - Yes
M4, T3 (mostly tele-coil compatible)
Multiple Languages Yes Yes -
TTY/TDD (Digital) - Yes Yes
Alerts
Extra Display Yes - -
Connectivity
Bluetooth - Yes Yes
USB Yes Yes
Micro-USB
-
Wi-Fi - Yes
802.11 b,g
-
Contacts
Picture ID - Yes Yes
Ringer ID - Yes Yes
Voice Dialing Yes Yes Yes
Customization
Changeable Body Plates Yes - -
Custom Graphics - Yes Yes
Custom Ringtones - Yes Yes
Real-Music Ringers - Yes Yes
Data & Network
Data Tethering Yes - Yes
WAP / Web Browser Yes Yes Yes
Input
Predictive Text Entry Yes Yes -
Side Keys Yes Yes Yes
Stylus - - Yes
Text Keyboard, Hardware - Yes -
Touch Screen - Yes
Capacitive
Yes
Memory
Memory Card Slot - Yes Yes
Messaging
Email Client - Yes Yes
Instant Messaging - Yes Yes
MMS - Yes -
Text Messaging Templates - Yes -
Music
Headphone Jack (3.5mm) - Yes Yes
Music Player - Yes Yes
Productivity
Alarm - Yes Yes
Calculator - Yes Yes
Calendar Yes Yes Yes
Voice Memo Yes Yes -
Software
BREW - Yes -
Games Yes Yes Yes
Java (J2ME) - - Yes
Voice
Headset Jack (2.5 mm) Yes - -
Speaker Phone - Yes Yes
  Samsung SCH-A310 Samsung Craft SCH-R900 Samsung Instinct S30
  X > < X > < X

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

 
Phone Samsung SCH-A310 Samsung Craft SCH-R900 Samsung Instinct S30

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