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Phone	Nokia 6555	Samsung SCH-A990	HTC EVO 4G	Sony Ericsson T62u	ZTE Citrine
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2" diag. 4 : 3	?	4.3" diag. 5 : 3	?	4" diag. 5 : 3
Display Resolution & Type	240 x 320 pixels (~200 ppi) LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) LCD (TFT/TFD)	? LCD (Grayscale)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	60 Hz
Battery	1,020 mAh	1,000 mAh	1,500 mAh	?	1,650 mAh
Processor	?	?	1 GHz Qualcomm Snapdragon S1 QSD8650	?	?
RAM	?	?	?	?	1 GB
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	8 GB
Main Camera	1 megapixel	3 megapixel	8 megapixel	-	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QCIF (176 x 144)	?	720p HD	-	?
Front Camera	-	-	Yes	-	Yes
Weight	3.42 oz (97g)	4.4 oz (125g)	6 oz (170g)	4.48 oz (127g)	4.82 oz (137g)
Dimensions	3.92" x 1.74" x 0.77" (100 x 44 x 19.6 mm)	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)	4.8" x 2.6" x 0.5" (122 x 66 x 12.7 mm)	4.76" x 2.13" x 0.91" (121 x 54 x 23.1 mm)	4.92" x 2.56" x 0.41" (125 x 65 x 10.4 mm)
Form Factor	Clamshell	Clamshell	Slab	Slab	Slab
Platform / OS	(proprietary)	(proprietary)	Android	(proprietary)	Android
Network Bands	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900	4G WiMAX: 41 CDMA: 850, 1900	GSM: 850, 1900 TDMA: 850, 1900 AMPS: 850	4G LTE: 2, 4, 5, 17 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *
Data Technology	WCDMA (UMTS)	EVDO r0	WiMAX	GPRS	LTE (Cat 3)
Features
Flashlight	-	Yes	-	-	Yes
GPS / Location	-	Yes	n/a	-	n/a
Accessibility
Adjustable Text Size	Yes	-	n/a	-	n/a
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	Yes M3 (mostly compatible)	Yes	-	Yes M4, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	Yes	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	-	Yes
Alerts
Extra Display	Yes	Yes	-	-	-
Ringer Profiles	Yes	-	-	Yes	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Mobile Hotspot	-	-	n/a	-	n/a
USB	Yes Micro-USB	Yes	Yes	Yes	Yes Micro-USB
Wi-Fi	-	-	Yes 802.11 b,g	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	Yes	Yes	n/a	-	n/a
Ringer ID	Yes	Yes	n/a	Yes	n/a
Voice Dialing	Yes	Yes	n/a	Yes	n/a
Customization
Changeable Body Plates	-	-	-	Yes	-
Custom Graphics	Yes	Yes	n/a	Yes	n/a
Custom Ringtones	Yes	Yes	n/a	Yes	n/a
Real-Music Ringers	Yes	Yes	n/a	-	n/a
Data & Network
Data Tethering	Yes	Yes	n/a	Yes	n/a
WAP / Web Browser	Yes	Yes	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	Yes	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	-	-	Yes Capacitive	-	Yes
Memory
Memory Card Slot	Yes	Yes	Yes	-	Yes
Messaging
Email Client	Yes	-	n/a	Yes	n/a
EMS / Picture Messaging	-	Yes	n/a	Yes	n/a
Instant Messaging	Yes	-	n/a	-	n/a
MMS	Yes	Yes	n/a	-	n/a
Text Messaging Templates	Yes	Yes	n/a	Yes	n/a
Music
FM Radio	-	-	Yes	-	-
Headphone Jack (3.5mm)	-	-	Yes	-	Yes
Music Player	Yes	Yes	n/a	-	n/a
Stereo Speakers	-	Yes	-	-	-
Photo & Video
TV Output	-	Yes	Yes	-	-
Productivity
Alarm	Yes	Yes	n/a	Yes	n/a
Calculator	Yes	Yes	n/a	Yes	n/a
Calendar	Yes	Yes	n/a	Yes	n/a
To-Do List	Yes	-	n/a	Yes	n/a
Voice Memo	Yes	Yes	n/a	Yes	n/a
Software
BREW	-	Yes	n/a	-	n/a
Games	Yes	Yes	n/a	Yes	n/a
Java (J2ME)	Yes	-	n/a	-	n/a
Voice
Headset Jack (2.5 mm)	Yes	-	n/a	Yes	n/a
Push-To-Talk	Yes *	-	-	-	-
Speaker Phone	Yes	Yes	Yes	-	Yes
	* Some versions only
	Nokia 6555	Samsung SCH-A990	HTC EVO 4G	Sony Ericsson T62u	ZTE Citrine
	X >	< X >	< X >	< X >	< X

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


Phone	Nokia 6555	Samsung SCH-A990	HTC EVO 4G	Sony Ericsson T62u	ZTE Citrine