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Phone Samsung SGH-X640 Cal-Comp EZ Samsung Galaxy S II, Epic 4G Touch Coolpad Defiant
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size ? ? 4.5" diag.
5 : 3
5" diag.
16 : 9
Display Resolution & Type 128 x 160 pixels
LCD (TFT/TFD)
128 x 128 pixels
LCD (STN)
480 x 800 pixels
(~206 ppi)
AMOLED
480 x 854 pixels
(~196 ppi)
LCD (TFT/TFD)
Display Refresh ? ? 60 Hz 60 Hz
Battery 800 mAh 800 mAh 1,800 mAh 2,450 mAh
Processor ? ? 1.2 GHz Samsung Exynos C210 dual-core 1.4 GHz Qualcomm Snapdragon 425 (MSM8917)
RAM ? ? ? 1 GB
Storage ? raw hardware ? raw hardware 16 GB 8 GB
Main Camera Yes - 8 megapixel 5 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture - - 1080p HD 720p HD
Front Camera - - 2 megapixel 2 megapixel
Weight 3 oz
(85g)
2.47 oz
(70g)
4.55 oz
(129g)
6.5 oz
(184g)
Dimensions 3.43" x 1.81" x 0.91"
(87 x 46 x 23.1 mm)
4.04" x 1.71" x 0.63"
(103 x 43 x 16 mm)
5.1" x 2.7" x 0.38"
(130 x 69 x 9.6 mm)
5.69" x 2.81" x 0.4"
(145 x 71 x 10.2 mm)
Form Factor Clamshell Slab Slab Slab
Platform / OS (proprietary) (proprietary) Android Android
Network Bands

GSM: 900, 1800, 1900

CDMA: 850, 1900

4G WiMAX: 41

CDMA: 800, 850, 1900

*

4G LTE: 2, 4, 5, 12

WCDMA: 2, 4, 5

GSM: 850, 900, 1800, 1900

Data Technology GPRS 1xRTT WiMAX LTE (Cat 4)
Features 
Flashlight - - - Yes
GPS / Location - Yes n/a n/a
Accessibility
Hearing Aid Compatible - - Yes
M4, T3 (mostly tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
Multiple Languages Yes Yes n/a n/a
TTY/TDD (Digital) - - Yes Yes
Connectivity
Bluetooth - - Yes Yes
Mobile Hotspot - - n/a n/a
USB - Yes
Mini-USB
Yes
Micro-USB
Yes
Micro-USB
Wi-Fi - - Yes
4 (802.11 a,b,g,n)
Yes
4 (802.11 b,g,n)
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
Touch Screen - - Yes
Capacitive
Yes
Capacitive
Memory
Memory Card Slot - - Yes 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 Yes n/a n/a
Music
Headphone Jack (3.5mm) - - Yes Yes
Music Player - - n/a n/a
Photo & Video
DLNA - - Yes -
TV Output - - Yes -
Productivity
Alarm Yes Yes n/a n/a
Calculator Yes Yes n/a n/a
Calendar Yes Yes n/a n/a
To-Do List Yes Yes n/a n/a
Voice Memo Yes 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 Yes n/a n/a
Speaker Phone Yes - Yes Yes
  * Some versions only
  Samsung SGH-X640 Cal-Comp EZ Samsung Galaxy S II, Epic 4G Touch Coolpad Defiant
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Phone Samsung SGH-X640 Cal-Comp EZ Samsung Galaxy S II, Epic 4G Touch Coolpad Defiant

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