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Phone Samsung SGH-X640 Apple iPhone 4 (CDMA) HTC Shadow
Current U.S. Carriers (none) (none) (none)
Global Availability Released Released Released
Specifications 
Display Size ? 3.5" diag.
5 : 3
2.6" diag.
4 : 3
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
640 x 960 pixels
(~330 ppi)
LCD (TFT/TFD)
240 x 320 pixels
(~154 ppi)
LCD (TFT/TFD)
Display Refresh ? 60 Hz ?
Battery 800 mAh ? 920 mAh
Processor ? ? 200 MHz OMAP 850
RAM ? ? ?
Storage ? raw hardware 8 GB * ? raw hardware
Main Camera Yes 5 megapixel 2 megapixel
Wide Camera - - -
Tele Camera - - -
Video Capture - 720p HD ?
Front Camera - Yes -
Weight 3 oz
(85g)
4.8 oz
(136g)
5.29 oz
(150g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
4.5" x 2.31" x 0.37"
(114 x 59 x 9.4 mm)
4.06" x 2.09" x 0.59"
(103 x 53 x 15 mm)
Form Factor Clamshell Slab Slide
Platform / OS (proprietary) iOS Windows Mobile Standard
Network Bands

GSM: 900, 1800, 1900

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

Data Technology GPRS EVDO rA EDGE
Features 
GPS / Location - n/a n/a
Accessibility
Adjustable Text Size - n/a n/a
Hearing Aid Compatible - Yes
M4, T4 (very tele-coil compatible)
-
Multiple Languages Yes n/a n/a
Alerts
Ringer Profiles - - Yes
Connectivity
Bluetooth - Yes Yes
Mobile Hotspot - n/a n/a
USB - Yes Yes
Mini-USB
Wi-Fi - Yes
4 (802.11 b,g,n)
Yes
802.11 b,g
Contacts
Picture ID Yes n/a n/a
Ringer ID Yes n/a n/a
Voice Dialing - n/a n/a
Customization
Custom Graphics Yes n/a n/a
Custom Ringtones Yes n/a n/a
Real-Music Ringers - n/a n/a
Data & Network
Data Tethering - n/a n/a
WAP / Web Browser Yes n/a n/a
Input
Predictive Text Entry Yes n/a n/a
Side Keys Yes Yes Yes
Text Keyboard, Hardware - - Yes
Touch Screen - Yes
Capacitive
-
Memory
Memory Card Slot - - Yes
Messaging
Email Client - n/a n/a
EMS / Picture Messaging Yes n/a n/a
Instant Messaging - n/a n/a
MMS Yes n/a n/a
Text Messaging Templates Yes n/a n/a
Music
Headphone Jack (3.5mm) - Yes -
Music Player - n/a n/a
Photo & Video
TV Output - Yes -
Video Calling - n/a n/a
Productivity
Alarm Yes n/a n/a
Calculator Yes n/a n/a
Calendar Yes n/a n/a
To-Do List Yes n/a n/a
Voice Memo Yes n/a n/a
Software
Games Yes n/a n/a
Java (J2ME) Yes n/a n/a
Voice
Headset Jack (2.5 mm) Yes n/a n/a
Speaker Phone Yes Yes Yes
  Samsung SGH-X640 Apple iPhone 4 (CDMA) HTC Shadow
  X > < X > < X

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

 
Phone Samsung SGH-X640 Apple iPhone 4 (CDMA) HTC Shadow

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