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Phone	Samsung SCH-A990	ZTE Flash	Samsung DoubleTime	Nokia Lumia 810	ZTE Blade Vantage
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	4.5" diag. 16 : 9	3.2" diag. 5 : 3	4.3" diag. 5 : 3	5" diag. 16 : 9
Display Resolution & Type	240 x 320 pixels LCD (TFT/TFD)	720 x 1280 pixels (~326 ppi) LCD (TFT/TFD)	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) AMOLED	480 x 854 pixels (~196 ppi) LCD (TFT/TFD)
Display Refresh	?	60 Hz	60 Hz	?	60 Hz
Battery	1,000 mAh	1,780 mAh	1,200 mAh	1,800 mAh	2,500 mAh
Processor	?	1.5 GHz Qualcomm Snapdragon S4 Plus MSM8960	600 MHz Qualcomm	1.5 GHz Qualcomm Snapdragon	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)
RAM	?	1 GB	?	1 GB	2 GB
Storage	? raw hardware	8 GB	? raw hardware	8 GB	16 GB
Main Camera	3 megapixel	12 megapixel	3 megapixel	8 megapixel	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	1080p HD	QVGA (320 x 240)	1080p HD	720p HD
Front Camera	-	1 megapixel	-	1 megapixel	2 megapixel
Weight	4.4 oz (125g)	5.2 oz (147g)	5.22 oz (148g)	5.11 oz (145g)	5.29 oz (150g)
Dimensions	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)	5.27" x 2.56" x 0.38" (134 x 65 x 9.7 mm)	4.45" x 2.44" x 0.59" (113 x 62 x 15 mm)	5" x 2.69" x 0.44" (127 x 68 x 11.2 mm)	5.73" x 2.85" x 0.36" (146 x 72 x 9.2 mm)
Form Factor	Clamshell	Slab	Clamshell	Slab	Slab
Platform / OS	(proprietary)	Android	Android	Windows	Android
Network Bands	CDMA: 850, 1900	4G LTE: 25 CDMA: 800, 850, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900	4G LTE: 2, 4, 5, 13
Data Technology	EVDO r0	LTE (Cat 3)	HSPA 7.2	HSPA+ 42	LTE (Cat 4)
Features
Flashlight	Yes	-	-	-	Yes
GPS / Location	Yes	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	Yes	Yes	Yes
Multiple Languages	Yes	n/a	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Extra Display	Yes	-	-	-	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Mobile Hotspot	-	n/a	n/a	n/a	n/a
NFC	-	Yes	-	Yes	-
USB	Yes	Yes Micro-USB	Yes Micro-USB	Yes Micro-USB	Yes Micro-USB
Wi-Fi	-	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 a,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	Yes	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	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	Yes
Messaging
Email Client	-	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	Yes	Yes
Music Player	Yes	n/a	n/a	n/a	n/a
Stereo Speakers	Yes	-	-	-	-
Photo & Video
TV Output	Yes	-	-	-	-
Power
Wireless Charging	-	-	-	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
Voice Memo	Yes	n/a	n/a	n/a	n/a
Software
BREW	Yes	n/a	n/a	n/a	n/a
Games	Yes	n/a	n/a	n/a	n/a
Voice
HD Voice	-	Yes	-	-	Yes
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	Samsung SCH-A990	ZTE Flash	Samsung DoubleTime	Nokia Lumia 810	ZTE Blade Vantage
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SCH-A990	ZTE Flash	Samsung DoubleTime	Nokia Lumia 810	ZTE Blade Vantage