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Phone NEC 535M Samsung SGH-E640 Samsung SGH-R225 / SGH-R225M Sony Ericsson K850
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Not yet released Released Released Released
Specifications 
Display Size ? ? ? 2.2" diag.
4 : 3
Display Resolution & Type 240 x 320 pixels
LCD (TFT/TFD)
176 x 220 pixels
LCD (TFT/TFD)
128 x 64 pixels 240 x 320 pixels
(~182 ppi)
LCD (TFT/TFD)
Display Refresh ? ? ? ?
Battery 720 mAh 800 mAh ? ?
Processor ? ? ? ?
RAM ? ? ? ?
Storage ? raw hardware ? raw hardware ? raw hardware ? raw hardware
Main Camera 1 megapixel 1 megapixel - 5 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture QCIF (176 x 144) QCIF (176 x 144) - ?
Front Camera - - - -
Weight 4.16 oz
(118g)
3.17 oz
(90g)
3.35 oz
(95g)
4.2 oz
(119g)
Dimensions 3.98" x 1.93" x 1.02"
(101 x 49 x 25.9 mm)
3.37" x 1.78" x 0.93"
(86 x 45 x 23.6 mm)
4.33" x 1.81" x 0.93"
(110 x 46 x 23.6 mm)
4" x 1.9" x 0.7"
(102 x 48 x 17.8 mm)
Form Factor Clamshell Clamshell Slab Slab
Platform / OS (proprietary) (proprietary) (proprietary) (proprietary)
Network Bands

GSM: 850, 1800, 1900

GSM: 900, 1800, 1900

GSM: 900, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

Data Technology GPRS GPRS - HSDPA 3.6
Features 
Flashlight Yes - - -
Accessibility
Multiple Languages Yes Yes Yes Yes
TTY/TDD (Digital) Yes - - Yes
Alerts
Extra Display Yes Yes - -
Ringer Profiles Yes - - Yes
Connectivity
Bluetooth - Yes - Yes
Infrared (IR) Yes - - -
USB Yes Yes - Yes
Contacts
Picture ID Yes Yes - Yes
Ringer ID Yes Yes Yes Yes
Voice Dialing Yes - - Yes
Customization
Custom Graphics Yes Yes Yes Yes
Custom Ringtones Yes Yes Yes Yes
Real-Music Ringers - Yes - Yes
Data & Network
Data Tethering Yes - Yes Yes
WAP / Web Browser Yes Yes - Yes
Input
Predictive Text Entry Yes Yes Yes Yes
Side Keys Yes Yes - Yes
Memory
Memory Card Slot - - - Yes
Messaging
Email Client Yes Yes - Yes
EMS / Picture Messaging - Yes - -
MMS Yes Yes Yes Yes
Text Messaging Templates - Yes Yes Yes
Music
FM Radio - - - Yes
Music Player - Yes - Yes
Photo & Video
Video Calling - - - Yes *
Productivity
Alarm Yes Yes Yes Yes
Calculator Yes Yes Yes Yes
Calendar Yes Yes Yes Yes
To-Do List Yes Yes - Yes
Voice Memo Yes Yes - Yes
Software
Games Yes Yes Yes Yes
Java (J2ME) Yes Yes - Yes
Voice
Headset Jack (2.5 mm) - - Yes -
Speaker Phone - Yes - Yes
  * Some versions only
  NEC 535M Samsung SGH-E640 Samsung SGH-R225 / SGH-R225M Sony Ericsson K850
  X > < X > < X > < X

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

 
Phone NEC 535M Samsung SGH-E640 Samsung SGH-R225 / SGH-R225M Sony Ericsson K850

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