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Phone	Nokia Lumia 521 / 520	ZTE Blade Z Max	Nokia 6255i / 6256i	Motorola KRZR K1	LG PM-225
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4" diag. 5 : 3	6" diag. 16 : 9	?	?	?
Display Resolution & Type	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	176 x 220 pixels LCD (TFT/TFD)	128 x 160 pixels LCD (STN)
Display Refresh	?	60 Hz	?	?	?
Battery	1,430 mAh	4,080 mAh	1,070 mAh	780 mAh	1,000 mAh
Processor	1 GHz Qualcomm Snapdragon S4 MSM8270	1.4 GHz Qualcomm Snapdragon 435 (MSM8940)	?	?	?
RAM	512 MB	2 GB	?	?	?
Storage	8 GB	32 GB	? raw hardware	? raw hardware	? raw hardware
Main Camera	5 megapixel	16 megapixel	Yes	2 megapixel	Yes
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	720p HD	1080p HD	?	?	-
Front Camera	-	8 megapixel	-	-	-
Weight	4.39 oz (124g)	6.58 oz (186g)	4.23 oz (120g)	3.6 oz (102g)	3.35 oz (95g)
Dimensions	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)	6.51" x 3.28" x 0.33" (165 x 83 x 8.3 mm)	3.36" x 1.87" x 0.97" (85 x 47 x 24.6 mm)	4.05" x 1.65" x 0.63" (103 x 42 x 16 mm)	3.53" x 1.76" x 0.93" (90 x 45 x 23.6 mm)
Form Factor	Slab	Slab	Clamshell	Clamshell	Clamshell
Platform / OS	Windows	Android	(proprietary)	(proprietary)	(proprietary)
Network Bands	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	4G LTE: 2, 4, 5, 12, 66 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850	GSM: 850, 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850
Data Technology	HSPA+ 21	LTE (Cat 6)	1xRTT	EDGE	1xRTT
Features
Fingerprint Reader	-	Yes stand-alone	-	-	-
Flashlight	-	Yes	-	-	-
GPS / Location	n/a	n/a	Yes	-	Yes
Accessibility
Hearing Aid Compatible	Yes M3, T4 (very tele-coil compatible)	Yes M4, T3 (mostly tele-coil compatible)	Yes M4 (very compatible)	-	-
Multiple Languages	n/a	n/a	Yes	Yes	Yes
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	-	Yes	Yes	Yes
Ringer Profiles	-	-	Yes	Yes	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	-
Infrared (IR)	-	-	Yes	-	-
Mobile Hotspot	n/a	n/a	-	-	-
USB	Yes	Yes USB Type C	Yes	Yes	Yes
Wi-Fi	Yes	Yes 4 (802.11 b,g,n)	-	-	-
Contacts
Picture ID	n/a	n/a	Yes	Yes	Yes
Ringer ID	n/a	n/a	Yes	Yes	Yes
Voice Dialing	n/a	n/a	Yes	Yes	Yes
Customization
Custom Graphics	n/a	n/a	Yes	Yes	Yes
Custom Ringtones	n/a	n/a	Yes	Yes	Yes
Real-Music Ringers	n/a	n/a	Yes	-	-
Data & Network
Data Tethering	n/a	n/a	Yes	Yes	-
WAP / Web Browser	n/a	n/a	Yes	Yes	Yes
Input
Predictive Text Entry	n/a	n/a	Yes	Yes	Yes
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	Yes Capacitive	Yes Capacitive	-	-	-
Memory
Memory Card Slot	Yes	Yes	Yes	Yes	-
Messaging
Email Client	n/a	n/a	Yes	Yes	-
EMS / Picture Messaging	n/a	n/a	Yes *	Yes	-
Instant Messaging	n/a	n/a	-	-	-
MMS	n/a	n/a	Yes	Yes	-
Text Messaging Templates	n/a	n/a	Yes	Yes	-
Music
FM Radio	-	Yes	Yes	-	-
Headphone Jack (3.5mm)	Yes	Yes	-	-	-
Music Player	n/a	n/a	Yes *	Yes	-
Power
Fast Charging	-	Yes	-	-	-
Productivity
Alarm	n/a	n/a	Yes	Yes	Yes
Calculator	n/a	n/a	Yes	Yes	Yes
Calendar	n/a	n/a	Yes	Yes	Yes
To-Do List	n/a	n/a	Yes	-	-
Voice Memo	n/a	n/a	Yes	Yes	Yes
Software
BREW	n/a	n/a	Yes *	-	-
Games	n/a	n/a	Yes	Yes	Yes
Java (J2ME)	n/a	n/a	Yes *	Yes	Yes
Voice
HD Voice	-	Yes	-	-	-
Headset Jack (2.5 mm)	n/a	n/a	Yes	-	Yes
Push-To-Talk	-	-	-	Yes *	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Nokia Lumia 521 / 520	ZTE Blade Z Max	Nokia 6255i / 6256i	Motorola KRZR K1	LG PM-225
	X >	< X >	< X >	< X >	< X

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


Phone	Nokia Lumia 521 / 520	ZTE Blade Z Max	Nokia 6255i / 6256i	Motorola KRZR K1	LG PM-225