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Phone Samsung SGH-X640 Apple iPhone 4S Motorola Bali BlackBerry 7750
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? 3.5" diag.
5 : 3
2.2" diag.
4 : 3
?
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
640 x 960 pixels
(~330 ppi)
LCD (TFT/TFD)
176 x 220 pixels
(~128 ppi)
LCD (TFT/TFD)
240 x 240 pixels
LCD (Color)
Display Refresh ? 60 Hz ? ?
Battery 800 mAh ? 950 mAh ?
Processor ? Apple A5 ? ?
RAM ? ? ? ?
Storage ? raw hardware 64 GB * ? raw hardware ? raw hardware
Main Camera Yes 8 megapixel 1 megapixel -
Wide Camera - - - -
Tele Camera - - - -
Video Capture - 1080p HD ? -
Front Camera - Yes - -
Weight 3 oz
(85g)
4.9 oz
(139g)
2.6 oz
(74g)
5.01 oz
(142g)
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)
3.8" x 1.8" x 0.6"
(97 x 46 x 15.2 mm)
4.76" x 3.03" x 0.71"
(121 x 77 x 18 mm)
Form Factor Clamshell Slab Clamshell Slab
Platform / OS (proprietary) iOS (proprietary) BlackBerry OS
Network Bands

GSM: 900, 1800, 1900

WCDMA: 1, 2, 5, 8

CDMA: 850, 1900

GSM: 850, 900, 1800, 1900

CDMA: 1900

CDMA: 850, 1900

Data Technology GPRS HSPA 14.4 1xRTT 1xRTT
Features 
GPS / Location - n/a Yes n/a
Accessibility
Adjustable Text Size - n/a - n/a
Hearing Aid Compatible - Yes Yes
M3, T4 (very tele-coil compatible)
-
Multiple Languages Yes n/a Yes n/a
TTY/TDD (Digital) - Yes Yes Yes
Alerts
Extra Display - - Yes -
Ringer Profiles - - - Yes
Connectivity
Bluetooth - Yes Yes -
Mobile Hotspot - n/a - n/a
USB - Yes Yes
Mini-USB
Yes
Wi-Fi - Yes
4 (802.11 b,g,n)
- -
Contacts
Picture ID Yes n/a Yes n/a
Ringer ID Yes n/a Yes n/a
Voice Dialing - n/a Yes n/a
Customization
Custom Graphics Yes n/a Yes n/a
Custom Ringtones Yes n/a Yes n/a
Real-Music Ringers - n/a Yes n/a
Data & Network
Data Tethering - n/a - n/a
WAP / Web Browser Yes n/a Yes n/a
Input
Predictive Text Entry Yes n/a Yes n/a
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - - - Yes
Touch Screen - Yes
Capacitive
- -
Memory
Memory Card Slot - - Yes -
Messaging
Email Client - n/a Yes n/a
EMS / Picture Messaging Yes n/a - n/a
Instant Messaging - n/a Yes n/a
MMS Yes n/a Yes n/a
Text Messaging Templates Yes n/a Yes n/a
Music
Headphone Jack (3.5mm) - Yes - -
Music Player - n/a Yes n/a
Photo & Video
TV Output - Yes - -
Productivity
Alarm Yes n/a Yes n/a
Calculator Yes n/a Yes n/a
Calendar Yes n/a Yes n/a
To-Do List Yes n/a - n/a
Voice Memo Yes n/a Yes n/a
Software
Games Yes n/a Yes n/a
Java (J2ME) Yes n/a Yes n/a
Voice
Headset Jack (2.5 mm) Yes n/a Yes n/a
Speaker Phone Yes Yes Yes -
  Samsung SGH-X640 Apple iPhone 4S Motorola Bali BlackBerry 7750
  X > < X > < X > < X

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

 
Phone Samsung SGH-X640 Apple iPhone 4S Motorola Bali BlackBerry 7750

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