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Phone	Motorola Q9m / Q9c	Samsung SGH-X640	Nokia Lumia 521 / 520	Samsung DoubleTime	ZTE Blade Vantage
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2.4" diag. 4 : 3	?	4" diag. 5 : 3	3.2" diag. 5 : 3	5" diag. 16 : 9
Display Resolution & Type	320 x 240 pixels (~167 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)	480 x 854 pixels (~196 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	60 Hz	60 Hz
Battery	1,170 mAh	800 mAh	1,430 mAh	1,200 mAh	2,500 mAh
Processor	PXA27x (ARM920T)	?	1 GHz Qualcomm Snapdragon S4 MSM8270	600 MHz Qualcomm	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)
RAM	?	?	512 MB	?	2 GB
Storage	? raw hardware	? raw hardware	8 GB	? raw hardware	16 GB
Main Camera	1 megapixel	Yes	5 megapixel	3 megapixel	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	-	720p HD	QVGA (320 x 240)	720p HD
Front Camera	-	-	-	-	2 megapixel
Weight	4.76 oz (135g)	3 oz (85g)	4.39 oz (124g)	5.22 oz (148g)	5.29 oz (150g)
Dimensions	4.61" x 2.56" x 0.47" (117 x 65 x 11.9 mm)	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)	4.45" x 2.44" x 0.59" (113 x 62 x 15 mm)	5.73" x 2.85" x 0.36" (146 x 72 x 9.2 mm)
Form Factor	Slab	Clamshell	Slab	Clamshell	Slab
Platform / OS	Windows Mobile Standard	(proprietary)	Windows	Android	Android
Network Bands	CDMA: 850, 1900	GSM: 900, 1800, 1900	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	4G LTE: 2, 4, 5, 13
Data Technology	EVDO r0	GPRS	HSPA+ 21	HSPA 7.2	LTE (Cat 4)
Features
Flashlight	-	-	-	-	Yes
GPS / Location	n/a	-	n/a	n/a	n/a
Accessibility
Hearing Aid Compatible	Yes M3 (mostly compatible)	-	Yes M3, T4 (very tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	Yes M4, T4 (very tele-coil compatible)
Multiple Languages	n/a	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	-	Yes	Yes	Yes
Alerts
Ringer Profiles	Yes	-	-	-	-
Connectivity
Bluetooth	Yes	-	Yes	Yes	Yes
Mobile Hotspot	n/a	-	n/a	n/a	n/a
USB	Yes Mini-USB	-	Yes	Yes Micro-USB	Yes Micro-USB
Wi-Fi	-	-	Yes	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	Yes	n/a	n/a	n/a
Ringer ID	n/a	Yes	n/a	n/a	n/a
Voice Dialing	n/a	-	n/a	n/a	n/a
Customization
Custom Graphics	n/a	Yes	n/a	n/a	n/a
Custom Ringtones	n/a	Yes	n/a	n/a	n/a
Real-Music Ringers	n/a	-	n/a	n/a	n/a
Data & Network
Data Tethering	n/a	-	n/a	n/a	n/a
WAP / Web Browser	n/a	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	n/a	Yes	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	-	-	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	n/a
EMS / Picture Messaging	n/a	Yes	n/a	n/a	n/a
Instant Messaging	n/a	-	n/a	n/a	n/a
MMS	n/a	Yes	n/a	n/a	n/a
Text Messaging Templates	n/a	Yes	n/a	n/a	n/a
Music
Headphone Jack (3.5mm)	-	-	Yes	Yes	Yes
Music Player	n/a	-	n/a	n/a	n/a
Stereo Speakers	Yes	-	-	-	-
Productivity
Alarm	n/a	Yes	n/a	n/a	n/a
Calculator	n/a	Yes	n/a	n/a	n/a
Calendar	n/a	Yes	n/a	n/a	n/a
To-Do List	n/a	Yes	n/a	n/a	n/a
Voice Memo	n/a	Yes	n/a	n/a	n/a
Software
Games	n/a	Yes	n/a	n/a	n/a
Java (J2ME)	n/a	Yes	n/a	n/a	n/a
Voice
HD Voice	-	-	-	-	Yes
Headset Jack (2.5 mm)	n/a	Yes	n/a	n/a	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	Motorola Q9m / Q9c	Samsung SGH-X640	Nokia Lumia 521 / 520	Samsung DoubleTime	ZTE Blade Vantage
	X >	< X >	< X >	< X >	< X

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


Phone	Motorola Q9m / Q9c	Samsung SGH-X640	Nokia Lumia 521 / 520	Samsung DoubleTime	ZTE Blade Vantage