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Phone HTC EVO Design 4G / Hero S (CDMA) Samsung Transform Samsung Galaxy S II / SGH-i777 Samsung Trance SCH-U490
Current U.S. Carriers (none) (none) (none) (none)
Global Availability Released Released Released Released
Specifications 
Display Size 4" diag.
16 : 9
3.5" diag.
5 : 3
4.3" diag.
5 : 3
2.1" diag.
4 : 3
Display Resolution & Type 540 x 960 pixels
(~275 ppi)
LCD (TFT/TFD)
320 x 480 pixels
(~165 ppi)
LCD (TFT/TFD)
480 x 800 pixels
(~217 ppi)
AMOLED
176 x 220 pixels
(~134 ppi)
LCD (TFT/TFD)
Display Refresh 60 Hz 60 Hz 60 Hz ?
Battery 1,520 mAh 1,500 mAh 1,650 mAh ?
Processor 1.2 GHz Qualcomm Snapdragon S2 MSM8655 800 MHz Samsung S3C6410, Qualcomm QSC6085 1.2 GHz Samsung Exynos dual-core ?
RAM 768 MB ? ? ?
Storage 4 GB ? raw hardware 16 GB ? raw hardware
Main Camera 5 megapixel 3 megapixel 8 megapixel 1 megapixel
Wide Camera - - - -
Tele Camera - - - -
Video Capture 720p HD QVGA (320 x 240) 1080p HD -
Front Camera 1 megapixel Yes 2 megapixel -
Weight 5.22 oz
(148g)
5.37 oz
(152g)
4.3 oz
(122g)
3.53 oz
(100g)
Dimensions 4.78" x 2.44" x 0.46"
(122 x 62 x 11.8 mm)
4.61" x 2.42" x 0.61"
(117 x 61 x 15.5 mm)
4.96" x 2.6" x 0.35"
(126 x 66 x 8.9 mm)
4" x 1.97" x 0.55"
(102 x 50 x 14 mm)
Form Factor Slab Slide Slab Slide
Platform / OS Android Android Android (proprietary)
Network Bands

4G WiMAX: 41

WCDMA: 1, 8

CDMA: 800, 850, 1900

GSM: 850, 1900

*

CDMA: 850, 1900

WCDMA: 1, 2, 5

GSM: 850, 900, 1800, 1900

CDMA: 850, 1900

Data Technology WiMAX EVDO rA HSPA+ 21 1xRTT
Features 
Flashlight Yes - - -
GPS / Location n/a n/a n/a Yes
Accessibility
Adjustable Text Size n/a n/a n/a Yes
Hearing Aid Compatible Yes
M4, T4 (very tele-coil compatible)
Yes
M4, T3 (mostly tele-coil compatible)
Yes
M3 (mostly compatible)
Yes
M4, T3 (mostly tele-coil compatible)
Multiple Languages n/a n/a n/a Yes
TTY/TDD (Digital) Yes Yes Yes Yes
Connectivity
Bluetooth Yes Yes Yes Yes
Mobile Hotspot n/a n/a n/a -
NFC - - Yes -
USB Yes
Micro-USB
Yes
Micro-USB
Yes
Micro-USB
Yes
Wi-Fi Yes
4 (802.11 b,g,n)
Yes
4 (802.11 b,g,n)
Yes
4 (802.11 a,b,g,n)
-
Contacts
Picture ID n/a n/a n/a Yes
Ringer ID n/a n/a n/a Yes
Voice Dialing n/a n/a n/a Yes
Customization
Custom Graphics n/a n/a n/a Yes
Custom Ringtones n/a n/a n/a Yes
Real-Music Ringers n/a n/a n/a Yes
Data & Network
Data Tethering n/a n/a n/a Yes
WAP / Web Browser n/a n/a n/a Yes
Input
Predictive Text Entry n/a n/a n/a Yes
Side Keys Yes Yes Yes Yes
Text Keyboard, Hardware - Yes - -
Touch Screen Yes
Capacitive
Yes
Capacitive
Yes
Capacitive
-
Memory
Memory Card Slot Yes Yes Yes Yes
Messaging
Email Client n/a n/a n/a -
Instant Messaging n/a n/a n/a -
MMS n/a n/a n/a Yes
Text Messaging Templates n/a n/a n/a Yes
Music
FM Radio Yes - - -
Headphone Jack (3.5mm) Yes Yes Yes Yes
Music Player n/a n/a n/a Yes
Photo & Video
DLNA Yes - Yes -
TV Output - - Yes -
Productivity
Alarm n/a n/a n/a Yes
Calculator n/a n/a n/a Yes
Calendar n/a n/a n/a Yes
Voice Memo n/a n/a n/a Yes
Software
BREW n/a n/a n/a Yes
Games n/a n/a n/a Yes
Voice
Speaker Phone Yes Yes Yes Yes
  HTC EVO Design 4G / Hero S (CDMA) Samsung Transform Samsung Galaxy S II / SGH-i777 Samsung Trance SCH-U490
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NOTE: Differences are highlighted with bold / black text for visual clarity only.

 
Phone HTC EVO Design 4G / Hero S (CDMA) Samsung Transform Samsung Galaxy S II / SGH-i777 Samsung Trance SCH-U490

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