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Phone Siemens M75 Samsung SPH-i550 Samsung SPH-A640
Current U.S. Carriers (none) (none) (none)
Global Availability Not yet released Not yet released Released
Specifications 
Display Size ? ? ?
Display Resolution & Type 132 x 176 pixels
LCD (TFT/TFD)
320 x 320 pixels
LCD (TFT/TFD)
128 x 160 pixels
LCD (TFT/TFD)
Display Refresh ? ? ?
Battery 750 mAh ? 800 mAh
Processor ? 200 MHz Motorola MX-1 ?
RAM ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware
Main Camera 1 megapixel 1 megapixel Yes
Wide Camera - - -
Tele Camera - - -
Video Capture ? ? -
Front Camera - - -
Weight 3.88 oz
(110g)
? 3.2 oz
(91g)
Dimensions 4.35" x 2.03" x 0.82"
(110 x 52 x 20.8 mm)
3.46" x 2.34" x 1.1"
(88 x 59 x 27.9 mm)
3.6" x 1.8" x 0.9"
(91 x 46 x 22.9 mm)
Form Factor Slab Clamshell Clamshell
Platform / OS (proprietary) Palm OS (proprietary)
Network Bands

GSM: 900, 1800, 1900

CDMA: 850, 1900

AMPS: 850

CDMA: 850, 1900

AMPS: 850

Data Technology GPRS 1xRTT 1xRTT
Features 
GPS / Location - n/a Yes
Ruggedized Yes - -
Accessibility
Hearing Aid Compatible - - Yes
Multiple Languages Yes n/a Yes
TTY/TDD (Digital) - Yes Yes
Alerts
Extra Display - Yes Yes
Ringer Profiles Yes - -
Connectivity
Bluetooth Yes
Classic Audio
- Yes
Classic Audio
Infrared (IR) Yes Yes -
USB Yes - Yes
Contacts
Picture ID Yes n/a Yes
Ringer ID Yes n/a Yes
Voice Dialing - n/a Yes
Customization
Custom Graphics Yes n/a Yes
Custom Ringtones Yes n/a Yes
Data & Network
Data Tethering Yes n/a Yes
WAP / Web Browser Yes n/a Yes
Input
Predictive Text Entry Yes n/a Yes
Side Keys Yes Yes Yes
Touch Screen - Yes -
Memory
Memory Card Slot Yes Yes -
Messaging
Email Client Yes n/a -
EMS / Picture Messaging Yes n/a -
MMS Yes n/a -
Text Messaging Templates - n/a Yes
Music
Music Player Yes n/a -
Productivity
Alarm Yes n/a Yes
Calculator Yes n/a Yes
Calendar Yes n/a Yes
To-Do List Yes n/a Yes
Voice Memo Yes n/a Yes
Software
Games Yes n/a Yes
Java (J2ME) Yes n/a Yes
Voice
Headset Jack (2.5 mm) - n/a Yes
Push-To-Talk Yes - Yes
Speaker Phone Yes - Yes
  Siemens M75 Samsung SPH-i550 Samsung SPH-A640
  X > < X > < X

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Phone Siemens M75 Samsung SPH-i550 Samsung SPH-A640

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