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Phone	Motorola Sidekick Slide	Nokia Lumia 521 / 520	BlackBerry Curve 3G 9330	Kyocera Energi K490 / K493 / K494	ZTE Blade Vantage
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	4" diag. 5 : 3	2.5" diag. 4 : 3	?	5" diag. 16 : 9
Display Resolution & Type	320 x 240 pixels LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	320 x 240 pixels (~160 ppi) LCD (TFT/TFD)	104 x 80 pixels LCD (STN)	480 x 854 pixels (~196 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	60 Hz
Battery	?	1,430 mAh	1,150 mAh	?	2,500 mAh
Processor	225 MHz TI OMAP 850	1 GHz Qualcomm Snapdragon S4 MSM8270	?	?	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)
RAM	?	512 MB	?	?	2 GB
Storage	? raw hardware	8 GB	? raw hardware	? raw hardware	16 GB
Main Camera	1 megapixel	5 megapixel	2 megapixel	-	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	720p HD	?	-	720p HD
Front Camera	-	-	-	-	2 megapixel
Weight	5.3 oz (150g)	4.39 oz (124g)	3.7 oz (105g)	3.52 oz (100g)	5.29 oz (150g)
Dimensions	4.65" x 2.44" x 0.69" (118 x 62 x 17.5 mm)	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)	4.29" x 2.36" x 0.55" (109 x 60 x 14 mm)	4.45" x 1.89" x 0.91" (113 x 48 x 23.1 mm)	5.73" x 2.85" x 0.36" (146 x 72 x 9.2 mm)
Form Factor	Slide	Slab	Slab	Slab	Slab
Platform / OS	(proprietary)	Windows	BlackBerry OS	(proprietary)	Android
Network Bands	GSM: 850, 900, 1800, 1900	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900	CDMA: 850, 1900 AMPS: 850 *	4G LTE: 2, 4, 5, 13
Data Technology	EDGE	HSPA+ 21	EVDO r0	1xRTT	LTE (Cat 4)
Features
Flashlight	-	-	-	Yes	Yes
GPS / Location	-	n/a	n/a	Yes	n/a
Accessibility
Adjustable Text Size	Yes	n/a	n/a	-	n/a
Hearing Aid Compatible	-	Yes M3, T4 (very tele-coil compatible)	Yes M4, T4 (very tele-coil compatible)	-	Yes M4, T4 (very tele-coil compatible)
Multiple Languages	-	n/a	n/a	Yes *	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
USB	Yes	Yes	Yes Micro-USB	Yes	Yes Micro-USB
Wi-Fi	-	Yes	Yes 802.11 b,g	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	Yes	n/a	n/a	-	n/a
Ringer ID	Yes	n/a	n/a	Yes	n/a
Voice Dialing	-	n/a	n/a	Yes	n/a
Customization
Changeable Body Plates	-	-	-	Yes	-
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	-	n/a	n/a	Yes	n/a
WAP / Web Browser	Yes	n/a	n/a	Yes	n/a
Input
Predictive Text Entry	-	n/a	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	-	Yes
Text Keyboard, Hardware	Yes	-	Yes	-	-
Touch Screen	-	Yes Capacitive	-	-	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes	Yes	-	Yes
Messaging
Email Client	Yes	n/a	n/a	-	n/a
EMS / Picture Messaging	-	n/a	n/a	Yes	n/a
Instant Messaging	Yes	n/a	n/a	-	n/a
MMS	Yes	n/a	n/a	-	n/a
Music
Headphone Jack (3.5mm)	-	Yes	Yes	-	Yes
Music Player	Yes	n/a	n/a	-	n/a
Productivity
Alarm	Yes	n/a	n/a	Yes	n/a
Calculator	-	n/a	n/a	Yes	n/a
Calendar	Yes	n/a	n/a	Yes	n/a
To-Do List	Yes	n/a	n/a	-	n/a
Voice Memo	-	n/a	n/a	-	n/a
Software
BREW	-	n/a	n/a	Yes	n/a
Games	Yes	n/a	n/a	Yes	n/a
Java (J2ME)	Yes	n/a	n/a	-	n/a
Voice
HD Voice	-	-	-	-	Yes
Headset Jack (2.5 mm)	Yes	n/a	n/a	Yes	n/a
Speaker Phone	Yes	Yes	Yes	-	Yes
	* Some versions only
	Motorola Sidekick Slide	Nokia Lumia 521 / 520	BlackBerry Curve 3G 9330	Kyocera Energi K490 / K493 / K494	ZTE Blade Vantage
	X >	< X >	< X >	< X >	< X

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


Phone	Motorola Sidekick Slide	Nokia Lumia 521 / 520	BlackBerry Curve 3G 9330	Kyocera Energi K490 / K493 / K494	ZTE Blade Vantage