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Phone	Sony Ericsson Z550a	Samsung BlackJack SGH-i607	ZTE Blade Vantage 2	Siemens SK65	HTC Dash / S620 / S621 (Excalibur)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	1.9" diag. 4 : 3	?	5" diag. 18 : 9	?	?
Display Resolution & Type	176 x 220 pixels (~148 ppi) LCD (TFT/TFD)	320 x 240 pixels LCD (TFT/TFD)	480 x 960 pixels (~215 ppi) LCD (TFT/TFD)	132 x 176 pixels LCD (TFT/TFD)	320 x 240 pixels LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	?
Battery	?	1,200 mAh	2,050 mAh	750 mAh	960 mAh
Processor	?	?	2 GHz MediaTek MT6761	?	200 MHz OMAP 850
RAM	?	?	2 GB	?	?
Storage	? raw hardware	? raw hardware	16 GB	? raw hardware	? raw hardware
Main Camera	1 megapixel	1 megapixel	5 megapixel	-	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	QVGA (320 x 240)	720p HD	-	?
Front Camera	-	-	2 megapixel	-	-
Weight	3.26 oz (92g)	3.74 oz (106g)	5.3 oz (150g)	5.08 oz (144g)	4.23 oz (120g)
Dimensions	3.43" x 1.77" x 0.79" (87 x 45 x 20.1 mm)	4.45" x 2.32" x 0.46" (113 x 59 x 11.7 mm)	5.4" x 2.7" x 0.41" (137 x 69 x 10.4 mm)	4.72" x 1.85" x 0.87" (120 x 47 x 22.1 mm)	4.39" x 2.46" x 0.51" (112 x 62 x 13 mm)
Form Factor	Clamshell	Slab	Slab	Slab	Slab
Platform / OS	(proprietary)	Windows Mobile Standard	Android	(proprietary)	Windows Mobile Standard
Network Bands	GSM: 850, 900, 1800, 1900 *	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900	4G LTE: 2, 4, 5, 13 WCDMA: 1, 2, 5, 8 GSM: 850, 900, 1800, 1900	GSM: 900, 1800, 1900	GSM: 850, 900, 1800, 1900
Data Technology	GPRS	HSDPA 1.8	LTE (Cat 4)	GPRS	EDGE
Features
Flashlight	-	-	Yes	-	-
Accessibility
Adjustable Text Size	-	n/a	n/a	-	n/a
Hearing Aid Compatible	-	-	Yes M4, T3 (mostly tele-coil compatible)	-	-
Multiple Languages	Yes	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	-	Yes
Alerts
Extra Display	Yes	-	-	-	-
Ringer Profiles	Yes	Yes	-	-	Yes
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Infrared (IR)	-	-	-	Yes	-
USB	Yes	Yes	Yes Micro-USB	Yes	Yes
Wi-Fi	-	-	Yes 4 (802.11 b,g,n)	-	Yes 802.11 b,g
Contacts
Picture ID	Yes	n/a	n/a	-	n/a
Ringer ID	Yes	n/a	n/a	-	n/a
Voice Dialing	Yes	n/a	n/a	-	n/a
Customization
Custom Graphics	Yes	n/a	n/a	Yes	n/a
Custom Ringtones	Yes	n/a	n/a	Yes	n/a
Real-Music Ringers	Yes	n/a	n/a	-	n/a
Data & Network
Data Tethering	Yes	n/a	n/a	Yes	n/a
External Antenna Jack	-	n/a	n/a	-	n/a
WAP / Web Browser	Yes	n/a	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	-	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	Yes	-	Yes	Yes
Touch Screen	-	-	Yes Capacitive	-	-
Memory
Memory Card Slot	Yes	Yes	Yes	-	Yes
Messaging
Email Client	Yes	n/a	n/a	Yes	n/a
Instant Messaging	-	n/a	n/a	-	n/a
MMS	Yes	n/a	n/a	Yes	n/a
Text Messaging Templates	Yes	n/a	n/a	-	n/a
Music
FM Radio	Yes	-	-	-	-
Headphone Jack (3.5mm)	-	-	Yes	-	-
Music Player	Yes	n/a	n/a	-	n/a
Productivity
Alarm	Yes	n/a	n/a	Yes	n/a
Calculator	Yes	n/a	n/a	Yes	n/a
Calendar	Yes	n/a	n/a	Yes	n/a
To-Do List	Yes	n/a	n/a	Yes	n/a
Voice Memo	Yes	n/a	n/a	Yes	n/a
Software
Games	Yes	n/a	n/a	Yes	n/a
Java (J2ME)	Yes	n/a	n/a	Yes	n/a
Voice
HD Voice	-	-	Yes	-	-
Push-To-Talk	Yes *	-	-	Yes *	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Sony Ericsson Z550a	Samsung BlackJack SGH-i607	ZTE Blade Vantage 2	Siemens SK65	HTC Dash / S620 / S621 (Excalibur)
	X >	< X >	< X >	< X >	< X

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


Phone	Sony Ericsson Z550a	Samsung BlackJack SGH-i607	ZTE Blade Vantage 2	Siemens SK65	HTC Dash / S620 / S621 (Excalibur)