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Phone	ZTE Z431 / Altair	Samsung Rugby 4	Samsung SPH-N400	Samsung SGH-E400	ZTE Blade Z Max
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Not yet released	Released
Display Size	2.4" diag. 4 : 3	2.4" diag. 4 : 3	?	?	6" diag. 16 : 9
Display Resolution & Type	320 x 240 pixels (~167 ppi) LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	128 x 128 pixels LCD (STN)	128 x 144 pixels LCD (TFT/TFD)	1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	60 Hz
Battery	1,000 mAh	1,300 mAh	?	700 mAh	4,080 mAh
Processor	?	Intel XMM6230	?	?	1.4 GHz Qualcomm Snapdragon 435 (MSM8940)
RAM	?	128 MB	?	?	2 GB
Storage	? raw hardware	256 MB	? raw hardware	? raw hardware	32 GB
Main Camera	2 megapixel	3 megapixel	-	-	16 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QVGA (320 x 240)	QVGA (320 x 240)	-	-	1080p HD
Front Camera	-	-	-	-	8 megapixel
Weight	3.52 oz (100g)	5.22 oz (148g)	4 oz (113g)	3.1 oz (88g)	6.58 oz (186g)
Dimensions	4.49" x 2.39" x 0.41" (114 x 61 x 10.4 mm)	4.25" x 2.17" x 0.85" (108 x 55 x 21.6 mm)	4.25" x 2.04" x 0.82" (108 x 52 x 20.8 mm)	3.46" x 1.65" x 0.89" (88 x 42 x 22.6 mm)	6.51" x 3.28" x 0.33" (165 x 83 x 8.3 mm)
Form Factor	Slab	Clamshell	Flip	Clamshell	Slab
Platform / OS	(proprietary)	(proprietary)	(proprietary)	(proprietary)	Android
Network Bands	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850	GSM: 900, 1800, 1900	4G LTE: 2, 4, 5, 12, 66 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	?	HSPA+ 21	1xRTT	GPRS	LTE (Cat 6)
Features
Fingerprint Reader	-	-	-	-	Yes stand-alone
Flashlight	-	-	-	-	Yes
GPS / Location	Yes	Yes	Yes	-	n/a
Ruggedized	-	Yes	-	-	-
Water-Resistant	-	Yes IPX7 (snorkeling)	-	-	-
Accessibility
Adjustable Text Size	-	Yes	-	-	n/a
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	-	-	Yes M4, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	Yes	Yes	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	-	Yes
Alerts
Extra Display	-	Yes	-	Yes	-
Ringer Profiles	Yes	Yes	-	-	-
Connectivity
Bluetooth	Yes	Yes	-	-	Yes
Infrared (IR)	-	-	-	Yes	-
USB	Yes Micro-USB	Yes Micro-USB	Yes	-	Yes USB Type C
Wi-Fi	-	Yes 4 (802.11 b,g,n)	-	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	Yes	Yes	Yes	-	n/a
Ringer ID	Yes	Yes	Yes	-	n/a
Voice Dialing	-	Yes	Yes	-	n/a
Customization
Custom Graphics	Yes	Yes	Yes	Yes	n/a
Custom Ringtones	Yes	Yes	Yes	Yes	n/a
Real-Music Ringers	Yes	Yes	-	-	n/a
Data & Network
Data Tethering	Yes	-	Yes	Yes	n/a
WAP / Web Browser	Yes	Yes	Yes	Yes	n/a
Input
Predictive Text Entry	Yes	Yes	Yes	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	-	-	-	-
Touch Screen	-	-	-	-	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes	-	-	Yes
Messaging
Email Client	Yes	Yes	-	-	n/a
EMS / Picture Messaging	-	-	-	Yes	n/a
MMS	Yes	Yes	-	-	n/a
Text Messaging Templates	Yes	Yes	-	Yes	n/a
Music
FM Radio	-	-	-	-	Yes
Headphone Jack (3.5mm)	Yes	-	-	-	Yes
Music Player	Yes	Yes	-	-	n/a
Power
Fast Charging	-	-	-	-	Yes
Productivity
Alarm	Yes	Yes	Yes	Yes	n/a
Calculator	Yes	Yes	Yes	Yes	n/a
Calendar	Yes	Yes	Yes	Yes	n/a
To-Do List	-	Yes	Yes	Yes	n/a
Voice Memo	Yes	Yes	-	-	n/a
Software
BREW	Yes	-	-	-	n/a
Games	Yes	Yes	Yes	Yes	n/a
Java (J2ME)	-	Yes	Yes	Yes	n/a
Voice
HD Voice	-	-	-	-	Yes
Headset Jack (2.5 mm)	-	-	Yes	Yes	n/a
Push-To-Talk	-	Yes	-	-	-
Speaker Phone	Yes	Yes	Yes	-	Yes
	ZTE Z431 / Altair	Samsung Rugby 4	Samsung SPH-N400	Samsung SGH-E400	ZTE Blade Z Max
	X >	< X >	< X >	< X >	< X

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


Phone	ZTE Z431 / Altair	Samsung Rugby 4	Samsung SPH-N400	Samsung SGH-E400	ZTE Blade Z Max