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Specifications
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Phone	Samsung SGH-X820	Samsung SPH-i550	ZTE Speed	ZTE Blade Vantage	Samsung SCH-i830 / IP-830w
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Not yet released	Released	Released	Released
Display Size	?	?	4.5" diag. 16 : 9	5" diag. 16 : 9	?
Display Resolution & Type	220 x 176 pixels LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)	540 x 960 pixels (~245 ppi) LCD (TFT/TFD)	480 x 854 pixels (~196 ppi) LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	60 Hz	?
Battery	650 mAh	?	2,000 mAh	2,500 mAh	?
Processor	?	200 MHz Motorola MX-1	1.2 GHz Qualcomm Snapdragon 410 MSM8916	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)	520 MHz Intel Bulverde
RAM	?	?	1 GB	2 GB	?
Storage	? raw hardware	? raw hardware	8 GB	16 GB	? raw hardware
Main Camera	2 megapixel	1 megapixel	5 megapixel	8 megapixel	-
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	?	720p HD	720p HD	-
Front Camera	-	-	2 megapixel	2 megapixel	-
Weight	2.33 oz (66g)	?	4.8 oz (136g)	5.29 oz (150g)	6.44 oz (183g)
Dimensions	4.45" x 1.97" x 0.27" (113 x 50 x 6.9 mm)	3.46" x 2.34" x 1.1" (88 x 59 x 27.9 mm)	5.3" x 2.6" x 0.4" (135 x 66 x 10.2 mm)	5.73" x 2.85" x 0.36" (146 x 72 x 9.2 mm)	4.49" x 2.28" x 0.97" (114 x 58 x 24.6 mm)
Form Factor	Slab	Clamshell	Slab	Slab	Slide
Platform / OS	(proprietary)	Palm OS	Android	Android	Windows Mobile Professional
Network Bands	GSM: 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850	4G LTE: 25, 26, 41 CDMA: 800, 850, 1900	4G LTE: 2, 4, 5, 13	CDMA: 850, 1900 GSM: 900, 1800
Data Technology	EDGE	1xRTT	LTE (Cat 3)	LTE (Cat 4)	EVDO r0
Features
Flashlight	-	-	-	Yes	-
GPS / Location	-	n/a	n/a	n/a	n/a
Accessibility
Adjustable Text Size	-	n/a	n/a	n/a	n/a
Hearing Aid Compatible	-	-	Yes	Yes	-
Multiple Languages	Yes	n/a	n/a	n/a	n/a
TTY/TDD (Digital)	-	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	Yes	-	-	-
Ringer Profiles	-	-	-	-	Yes
Connectivity
Bluetooth	Yes	-	Yes	Yes	Yes
Infrared (IR)	-	Yes	-	-	Yes
Mobile Hotspot	-	n/a	n/a	n/a	n/a
USB	Yes	-	Yes Micro-USB	Yes Micro-USB	Yes
Wi-Fi	-	-	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)	-
Contacts
Picture ID	Yes	n/a	n/a	n/a	n/a
Ringer ID	Yes	n/a	n/a	n/a	n/a
Voice Dialing	-	n/a	n/a	n/a	n/a
Customization
Custom Graphics	Yes	n/a	n/a	n/a	n/a
Custom Ringtones	Yes	n/a	n/a	n/a	n/a
Real-Music Ringers	Yes	n/a	n/a	n/a	n/a
Data & Network
Data Tethering	-	n/a	n/a	n/a	n/a
External Antenna Jack	Yes	n/a	n/a	n/a	n/a
WAP / Web Browser	Yes	n/a	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	-	-	Yes
Touch Screen	-	Yes	Yes	Yes	Yes
Memory
Memory Card Slot	-	Yes	Yes	Yes	Yes
Messaging
Email Client	Yes	n/a	n/a	n/a	n/a
EMS / Picture Messaging	Yes	n/a	n/a	n/a	n/a
Instant Messaging	-	n/a	n/a	n/a	n/a
MMS	Yes	n/a	n/a	n/a	n/a
Text Messaging Templates	Yes	n/a	n/a	n/a	n/a
Music
Headphone Jack (3.5mm)	-	-	Yes	Yes	-
Music Player	-	n/a	n/a	n/a	n/a
Stereo Speakers	-	-	-	-	Yes
Photo & Video
TV Output	Yes	-	-	-	-
Productivity
Alarm	Yes	n/a	n/a	n/a	n/a
Calculator	Yes	n/a	n/a	n/a	n/a
Calendar	Yes	n/a	n/a	n/a	n/a
To-Do List	Yes	n/a	n/a	n/a	n/a
Voice Memo	Yes	n/a	n/a	n/a	n/a
Software
Games	Yes	n/a	n/a	n/a	n/a
Java (J2ME)	Yes	n/a	n/a	n/a	n/a
Voice
HD Voice	-	-	Yes	Yes	-
Headset Jack (2.5 mm)	-	n/a	n/a	n/a	n/a
Speaker Phone	Yes	-	Yes	Yes	Yes
	Samsung SGH-X820	Samsung SPH-i550	ZTE Speed	ZTE Blade Vantage	Samsung SCH-i830 / IP-830w
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X820	Samsung SPH-i550	ZTE Speed	ZTE Blade Vantage	Samsung SCH-i830 / IP-830w