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Phone Samsung SCH-A645 Nokia N90 Samsung SPH-S100 Sharp GX-10 / GX-10i
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Not yet released Not yet released
Specifications 
Display Size ? ? ? ?
Display Resolution & Type 128 x 160 pixels
LCD (STN)
352 x 416 pixels
LCD (TFT/TFD)
? 120 x 160 pixels
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery 1,000 mAh 760 mAh ? 720 mAh
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera - 2 megapixel - Yes
Wide Camera - - - -
Tele Camera - - - -
Video Capture - CIF (352 x 288) - -
Front Camera - - - -
Weight 3.2 oz
(91g)
6.1 oz
(173g)
? 3.88 oz
(110g)
Dimensions 3.54" x 1.79" x 0.94"
(90 x 45 x 23.9 mm)
4.41" x 2.01" x 0.94"
(112 x 51 x 23.9 mm)
? 3.7" x 1.93" x 1.06"
(94 x 49 x 26.9 mm)
Form Factor Clamshell Clamshell Watch Clamshell
Platform / OS (proprietary) S60 (Symbian) (proprietary) (proprietary)
Network Bands

CDMA: 850, 1900

AMPS: 850

WCDMA: 1

GSM: 900, 1800, 1900

CDMA: 1900

GSM: 900, 1800, 1900

Data Technology 1xRTT EDGE - GPRS
Features 
GPS / Location Yes n/a - -
Accessibility
Hearing Aid Compatible Yes - - -
Multiple Languages Yes n/a - Yes
TTY/TDD (Digital) Yes - - -
Alerts
Extra Display Yes Yes - Yes
Ringer Profiles - Yes - Yes
Connectivity
Bluetooth - Yes - -
Infrared (IR) - - - Yes
USB - Yes - -
Contacts
Picture ID Yes n/a - -
Ringer ID - n/a - Yes
Voice Dialing Yes n/a - -
Customization
Custom Graphics Yes n/a - Yes
Custom Ringtones Yes n/a - Yes
Data & Network
Data Tethering - n/a - Yes
WAP / Web Browser Yes * n/a - Yes
Input
Predictive Text Entry Yes n/a - Yes
Side Keys Yes Yes - Yes
Memory
Memory Card Slot - Yes - -
Messaging
Email Client - n/a - -
EMS / Picture Messaging Yes n/a - -
MMS - n/a - Yes
Text Messaging Templates Yes n/a - Yes
Music
Music Player - n/a - -
Photo & Video
Video Calling - n/a - -
Productivity
Alarm Yes n/a Yes Yes
Calculator Yes n/a - Yes
Calendar Yes n/a Yes Yes
To-Do List Yes n/a Yes -
Voice Memo Yes n/a - Yes
Software
BREW Yes * n/a - -
Games Yes * n/a - Yes
Java (J2ME) - n/a - -
Voice
Headset Jack (2.5 mm) Yes n/a Yes Yes
Push-To-Talk - Yes - -
Speaker Phone Yes Yes Yes -
  * Some versions only
  Samsung SCH-A645 Nokia N90 Samsung SPH-S100 Sharp GX-10 / GX-10i
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone Samsung SCH-A645 Nokia N90 Samsung SPH-S100 Sharp GX-10 / GX-10i

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