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Specifications
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Phone	Motorola Sidekick Slide	ZTE Blade Vantage	BlackBerry 7750	Nokia Lumia 521 / 520	Motorola Flipside
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	5" diag. 16 : 9	?	4" diag. 5 : 3	3.1" diag. 5 : 3
Display Resolution & Type	320 x 240 pixels LCD (TFT/TFD)	480 x 854 pixels (~196 ppi) LCD (TFT/TFD)	240 x 240 pixels LCD (Color)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	320 x 480 pixels (~186 ppi) LCD (TFT/TFD)
Display Refresh	?	60 Hz	?	?	60 Hz
Battery	?	2,500 mAh	?	1,430 mAh	1,150 mAh
Processor	225 MHz TI OMAP 850	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)	?	1 GHz Qualcomm Snapdragon S4 MSM8270	720 MHz TI OMAP 3410
RAM	?	2 GB	?	512 MB	?
Storage	? raw hardware	16 GB	? raw hardware	8 GB	? raw hardware
Main Camera	1 megapixel	8 megapixel	-	5 megapixel	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	720p HD	-	720p HD	CIF (352 x 288)
Front Camera	-	2 megapixel	-	-	-
Weight	5.3 oz (150g)	5.29 oz (150g)	5.01 oz (142g)	4.39 oz (124g)	5.11 oz (145g)
Dimensions	4.65" x 2.44" x 0.69" (118 x 62 x 17.5 mm)	5.73" x 2.85" x 0.36" (146 x 72 x 9.2 mm)	4.76" x 3.03" x 0.71" (121 x 77 x 18 mm)	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)	4.31" x 2.26" x 0.59" (109 x 57 x 15 mm)
Form Factor	Slide	Slab	Slab	Slab	Slide
Platform / OS	(proprietary)	Android	BlackBerry OS	Windows	Android
Network Bands	GSM: 850, 900, 1800, 1900	4G LTE: 2, 4, 5, 13	CDMA: 850, 1900	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900
Data Technology	EDGE	LTE (Cat 4)	1xRTT	HSPA+ 21	HSPA 7.2
Features
Flashlight	-	Yes	-	-	-
GPS / Location	-	n/a	n/a	n/a	n/a
Accessibility
Adjustable Text Size	Yes	n/a	n/a	n/a	n/a
Hearing Aid Compatible	-	Yes M4, T4 (very tele-coil compatible)	-	Yes M3, T4 (very tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	-	n/a	n/a	n/a	n/a
TTY/TDD (Digital)	-	Yes	Yes	Yes	Yes
Alerts
Ringer Profiles	Yes	-	Yes	-	-
Connectivity
Bluetooth	Yes	Yes	-	Yes	Yes
Mobile Hotspot	-	n/a	n/a	n/a	n/a
USB	Yes	Yes Micro-USB	Yes	Yes	Yes Micro-USB
Wi-Fi	-	Yes 4 (802.11 b,g,n)	-	Yes	Yes
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
WAP / Web Browser	Yes	n/a	n/a	n/a	n/a
Input
Predictive Text Entry	-	n/a	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	-	Yes	-	Yes
Touch Screen	-	Yes Capacitive	-	Yes Capacitive	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes	-	Yes	Yes
Messaging
Email Client	Yes	n/a	n/a	n/a	n/a
Instant Messaging	Yes	n/a	n/a	n/a	n/a
MMS	Yes	n/a	n/a	n/a	n/a
Music
FM Radio	-	-	-	-	Yes
Headphone Jack (3.5mm)	-	Yes	-	Yes	Yes
Music Player	Yes	n/a	n/a	n/a	n/a
Productivity
Alarm	Yes	n/a	n/a	n/a	n/a
Calculator	-	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	-	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	-	-	-
Headset Jack (2.5 mm)	Yes	n/a	n/a	n/a	n/a
Speaker Phone	Yes	Yes	-	Yes	Yes
	Motorola Sidekick Slide	ZTE Blade Vantage	BlackBerry 7750	Nokia Lumia 521 / 520	Motorola Flipside
	X >	< X >	< X >	< X >	< X

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


Phone	Motorola Sidekick Slide	ZTE Blade Vantage	BlackBerry 7750	Nokia Lumia 521 / 520	Motorola Flipside