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Phone Samsung Messager III / R570 Samsung SCH-A645
Current U.S. Carriers (none) (none)
Global Availability Released Released
Specifications 
Display Size 2.4" diag.
4 : 3
?
Display Resolution & Type 240 x 320 pixels
(~167 ppi)
LCD (TFT/TFD)
128 x 160 pixels
LCD (STN)
Display Refresh ? ?
Battery 1,140 mAh 1,000 mAh
Processor ? ?
RAM ? ?
Storage ? raw hardware ? raw hardware
Main Camera 1 megapixel -
Wide Camera - -
Tele Camera - -
Video Capture - -
Front Camera - -
Weight 3.7 oz
(105g)
3.2 oz
(91g)
Dimensions 4.59" x 2.11" x 0.59"
(117 x 53 x 15 mm)
3.54" x 1.79" x 0.94"
(90 x 45 x 23.9 mm)
Form Factor Slide Clamshell
Platform / OS (proprietary) (proprietary)
Network Bands

CDMA: 850, 1700, 1900

CDMA: 850, 1900

AMPS: 850

Data Technology 1xRTT 1xRTT
Features 
GPS / Location Yes Yes
Accessibility
Hearing Aid Compatible Yes
M4, T3 (mostly tele-coil compatible)
Yes
M3 (mostly compatible)
Multiple Languages Yes Yes
TTY/TDD (Digital) Yes Yes
Alerts
Extra Display - Yes
Connectivity
Bluetooth Yes -
USB Yes -
Contacts
Picture ID Yes Yes
Ringer ID Yes -
Voice Dialing Yes Yes
Customization
Custom Graphics Yes Yes
Custom Ringtones Yes Yes
Real-Music Ringers Yes -
Data & Network
WAP / Web Browser Yes Yes *
Input
Predictive Text Entry Yes Yes
Side Keys Yes Yes
Text Keyboard, Hardware Yes -
Memory
Memory Card Slot Yes -
Messaging
EMS / Picture Messaging - Yes
MMS Yes -
Text Messaging Templates Yes Yes
Music
Headphone Jack (3.5mm) Yes -
Music Player Yes -
Productivity
Alarm Yes Yes
Calculator Yes Yes
Calendar Yes Yes
To-Do List - Yes
Voice Memo Yes Yes
Software
BREW Yes Yes *
Games Yes Yes *
Voice
Headset Jack (2.5 mm) - Yes
Speaker Phone Yes Yes
  * Some versions only
  Samsung Messager III / R570 Samsung SCH-A645
  X > < X

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

 
Phone Samsung Messager III / R570 Samsung SCH-A645

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