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Phone	BlackBerry Z10 (CDMA)	Nokia Lumia 521 / 520	Siemens CF75	ZTE Concord II
Current U.S. Carriers	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Not yet released	Released
Display Size	4.2" diag. 5 : 3	4" diag. 5 : 3	?	4" diag. 5 : 3
Display Resolution & Type	768 x 1280 pixels (~355 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (STN)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	60 Hz
Battery	1,800 mAh	1,430 mAh	600 mAh	1,820 mAh
Processor	1.5 GHz Qualcomm Snapdragon S4	1 GHz Qualcomm Snapdragon S4 MSM8270	?	1.2 GHz Qualcomm MSM8210
RAM	2 GB	512 MB	?	1 GB
Storage	16 GB	8 GB	? raw hardware	4 GB
Main Camera	8 megapixel	5 megapixel	Yes	5 megapixel
Wide Camera	-	-	-	-
Tele Camera	-	-	-	-
Video Capture	1080p HD	720p HD	-	720p HD
Front Camera	2 megapixel	-	-	-
Weight	4.78 oz (135g)	4.39 oz (124g)	3.17 oz (90g)	4.4 oz (125g)
Dimensions	5.12" x 2.58" x 0.35" (130 x 66 x 9 mm)	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)	3.43" x 1.73" x 1.26" (87 x 44 x 32 mm)	4.96" x 2.56" x 0.42" (126 x 65 x 10.7 mm)
Form Factor	Slab	Slab	Clamshell	Slab
Platform / OS	BlackBerry 10	Windows	(proprietary)	Android
Network Bands	4G LTE: 13 WCDMA: 1, 8 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	GSM: 900, 1800, 1900	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	LTE (Cat 3)	HSPA+ 21	EDGE	HSPA+ 21
Features
GPS / Location	n/a	n/a	-	n/a
Accessibility
Adjustable Text Size	n/a	n/a	-	n/a
Hearing Aid Compatible	-	Yes M3, T4 (very tele-coil compatible)	-	Yes M3, T4 (very tele-coil compatible)
Multiple Languages	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	-	Yes
Alerts
Extra Display	-	-	Yes	-
Ringer Profiles	Yes	-	-	-
Connectivity
Bluetooth	Yes	Yes	-	Yes
Infrared (IR)	-	-	Yes	-
Mobile Hotspot	n/a	n/a	-	n/a
NFC	Yes	-	-	-
USB	Yes Micro-USB	Yes	Yes	Yes Micro-USB
Wi-Fi	Yes 4 (802.11 a,b,g,n)	Yes	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	n/a	-	n/a
Ringer ID	n/a	n/a	-	n/a
Voice Dialing	n/a	n/a	-	n/a
Customization
Custom Graphics	n/a	n/a	Yes	n/a
Custom Ringtones	n/a	n/a	Yes	n/a
Real-Music Ringers	n/a	n/a	-	n/a
Data & Network
Data Tethering	n/a	n/a	Yes	n/a
WAP / Web Browser	n/a	n/a	Yes	n/a
Input
Predictive Text Entry	n/a	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes
Touch Screen	Yes Capacitive	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes	-	Yes
Messaging
Email Client	n/a	n/a	Yes	n/a
EMS / Picture Messaging	n/a	n/a	Yes	n/a
Instant Messaging	n/a	n/a	-	n/a
MMS	n/a	n/a	Yes	n/a
Text Messaging Templates	n/a	n/a	Yes	n/a
Music
Headphone Jack (3.5mm)	Yes	Yes	-	Yes
Music Player	n/a	n/a	-	n/a
Photo & Video
DLNA	Yes	-	-	-
TV Output	Yes	-	-	-
Productivity
Alarm	n/a	n/a	Yes	n/a
Calculator	n/a	n/a	Yes	n/a
Calendar	n/a	n/a	Yes	n/a
To-Do List	n/a	n/a	Yes	n/a
Voice Memo	n/a	n/a	Yes	n/a
Software
Games	n/a	n/a	Yes	n/a
Java (J2ME)	n/a	n/a	Yes	n/a
Voice
HD Voice	-	-	-	Yes
Push-To-Talk	-	-	Yes	-
Speaker Phone	Yes	Yes	Yes	Yes
	BlackBerry Z10 (CDMA)	Nokia Lumia 521 / 520	Siemens CF75	ZTE Concord II
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NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	BlackBerry Z10 (CDMA)	Nokia Lumia 521 / 520	Siemens CF75	ZTE Concord II