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Phone	LG Optimus L90	Nokia 6555	ZTE Blade Z Max	Sanyo RL-4920	Sony Ericsson Z550a
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4.7" diag. 16 : 9	2" diag. 4 : 3	6" diag. 16 : 9	?	1.9" diag. 4 : 3
Display Resolution & Type	540 x 960 pixels (~234 ppi) LCD (TFT/TFD)	240 x 320 pixels (~200 ppi) LCD (TFT/TFD)	1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD)	128 x 112 pixels LCD (Color)	176 x 220 pixels (~148 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	60 Hz	?	?
Battery	2,460 mAh	1,020 mAh	4,080 mAh	1,700 mAh	?
Processor	1.2 GHz Qualcomm Snapdragon 400 MSM8226	?	1.4 GHz Qualcomm Snapdragon 435 (MSM8940)	?	?
RAM	1 GB	?	2 GB	?	?
Storage	8 GB	? raw hardware	32 GB	? raw hardware	? raw hardware
Main Camera	5 megapixel	1 megapixel	16 megapixel	-	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	1080p HD	QCIF (176 x 144)	1080p HD	-	?
Front Camera	Yes	-	8 megapixel	-	-
Weight	4.37 oz (124g)	3.42 oz (97g)	6.58 oz (186g)	4.03 oz (114g)	3.26 oz (92g)
Dimensions	5.18" x 2.6" x 0.38" (132 x 66 x 9.7 mm)	3.92" x 1.74" x 0.77" (100 x 44 x 19.6 mm)	6.51" x 3.28" x 0.33" (165 x 83 x 8.3 mm)	4.22" x 1.85" x 0.85" (107 x 47 x 21.6 mm)	3.43" x 1.77" x 0.79" (87 x 45 x 20.1 mm)
Form Factor	Slab	Clamshell	Slab	Slab	Clamshell
Platform / OS	Android	(proprietary)	Android	(proprietary)	(proprietary)
Network Bands	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	WCDMA: 2, 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 *
Data Technology	HSPA+ 21	WCDMA (UMTS)	LTE (Cat 6)	1xRTT	GPRS
Features
Fingerprint Reader	-	-	Yes stand-alone	-	-
Flashlight	Yes	-	Yes	-	-
GPS / Location	n/a	-	n/a	Yes	-
Accessibility
Adjustable Text Size	n/a	Yes	n/a	-	-
Hearing Aid Compatible	Yes M3, T4 (very tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	Yes M4, T3 (mostly tele-coil compatible)	-	-
Multiple Languages	n/a	Yes	n/a	Yes	Yes
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	Yes	-	-	Yes
Ringer Profiles	-	Yes	-	-	Yes
Connectivity
Bluetooth	Yes	Yes	Yes	-	Yes
Infrared (IR)	Yes	-	-	-	-
Mobile Hotspot	n/a	-	n/a	-	-
USB	Yes	Yes Micro-USB	Yes USB Type C	Yes	Yes
Wi-Fi	Yes 4 (802.11 b,g,n)	-	Yes 4 (802.11 b,g,n)	-	-
Contacts
Picture ID	n/a	Yes	n/a	Yes	Yes
Ringer ID	n/a	Yes	n/a	Yes	Yes
Voice Dialing	n/a	Yes	n/a	Yes	Yes
Customization
Custom Graphics	n/a	Yes	n/a	Yes	Yes
Custom Ringtones	n/a	Yes	n/a	Yes	Yes
Real-Music Ringers	n/a	Yes	n/a	-	Yes
Data & Network
Data Tethering	n/a	Yes	n/a	-	Yes
WAP / Web Browser	n/a	Yes	n/a	Yes	Yes
Input
Predictive Text Entry	n/a	Yes	n/a	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	Yes	n/a	-	Yes
Instant Messaging	n/a	Yes	n/a	-	-
MMS	n/a	Yes	n/a	-	Yes
Text Messaging Templates	n/a	Yes	n/a	-	Yes
Music
FM Radio	-	-	Yes	-	Yes
Headphone Jack (3.5mm)	Yes	-	Yes	-	-
Music Player	n/a	Yes	n/a	-	Yes
Power
Fast Charging	-	-	Yes	-	-
Productivity
Alarm	n/a	Yes	n/a	Yes	Yes
Calculator	n/a	Yes	n/a	Yes	Yes
Calendar	n/a	Yes	n/a	Yes	Yes
To-Do List	n/a	Yes	n/a	Yes	Yes
Voice Memo	n/a	Yes	n/a	Yes	Yes
Software
Games	n/a	Yes	n/a	Yes	Yes
Java (J2ME)	n/a	Yes	n/a	Yes	Yes
Voice
Call Screening	-	-	-	Yes	-
HD Voice	-	-	Yes	-	-
Headset Jack (2.5 mm)	n/a	Yes	n/a	Yes	-
Push-To-Talk	-	Yes *	-	Yes	Yes *
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	LG Optimus L90	Nokia 6555	ZTE Blade Z Max	Sanyo RL-4920	Sony Ericsson Z550a
	X >	< X >	< X >	< X >	< X

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


Phone	LG Optimus L90	Nokia 6555	ZTE Blade Z Max	Sanyo RL-4920	Sony Ericsson Z550a