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Phone	Visible Midnight	ZTE Z431 / Altair	Samsung SGH-E400	Samsung SCH-U430	Microsoft Lumia 550
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Not yet released	Released	Released
Display Size	6.5" diag. 20 : 9	2.4" diag. 4 : 3	?	?	4.7" diag. 16 : 9
Display Resolution & Type	720 x 1600 pixels (~269 ppi) LCD (TFT/TFD)	320 x 240 pixels (~167 ppi) LCD (TFT/TFD)	128 x 144 pixels LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	720 x 1280 pixels (~312 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	?	?	?
Battery	4,000 mAh	1,000 mAh	700 mAh	1,000 mAh	2,100 mAh
Processor	MediaTek Helio P22 (MT6762)	?	?	?	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)
RAM	3 GB	?	?	?	1 GB
Storage	32 GB	? raw hardware	? raw hardware	? raw hardware	8 GB
Main Camera	13 megapixel	2 megapixel	-	Yes	5 megapixel
Wide Camera	5 megapixel	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	1080p HD	QVGA (320 x 240)	-	-	720p HD
Front Camera	8 megapixel	-	-	-	2 megapixel
Weight	6.35 oz (180g)	3.52 oz (100g)	3.1 oz (88g)	3.21 oz (91g)	5.01 oz (142g)
Dimensions	6.53" x 3" x 0.34" (166 x 76 x 8.6 mm)	4.49" x 2.39" x 0.41" (114 x 61 x 10.4 mm)	3.46" x 1.65" x 0.89" (88 x 42 x 22.6 mm)	3.67" x 1.85" x 0.78" (93 x 47 x 19.8 mm)	5.36" x 2.67" x 0.39" (136 x 68 x 9.9 mm)
Form Factor	Slab	Slab	Clamshell	Clamshell	Slab
Platform / OS	Android	(proprietary)	(proprietary)	(proprietary)	Windows
Network Bands	4G LTE: 2, 4, 5, 7, 12, 13, 66	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	GSM: 900, 1800, 1900	CDMA: 850, 1900	4G LTE: 2, 4, 5, 7, 12, 17 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	LTE (Cat 4)	?	GPRS	1xRTT	LTE (Cat 4)
Features
Fingerprint Reader	Yes stand-alone	-	-	-	-
Flashlight	Yes	-	-	-	Yes
GPS / Location	n/a	Yes	-	Yes	n/a
Accessibility
Adjustable Text Size	n/a	-	-	Yes	n/a
Hearing Aid Compatible	Yes M4, T3 (mostly tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	-	Yes M4, T4 (very tele-coil compatible)	Yes M3, T4 (very tele-coil compatible)
Multiple Languages	n/a	Yes	Yes	Yes	n/a
TTY/TDD (Digital)	-	Yes	-	Yes	Yes
Alerts
Extra Display	-	-	Yes	Yes	-
Ringer Profiles	-	Yes	-	-	-
Connectivity
Bluetooth	Yes	Yes	-	Yes	Yes
Infrared (IR)	-	-	Yes	-	-
Mobile Hotspot	n/a	-	-	-	n/a
USB	Yes USB Type C	Yes Micro-USB	-	-	Yes Micro-USB
Wi-Fi	Yes 5 (802.11 a,ac,b,g,n)	-	-	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	Yes	-	Yes	n/a
Ringer ID	n/a	Yes	-	Yes	n/a
Voice Dialing	n/a	-	-	Yes	n/a
Customization
Custom Graphics	n/a	Yes	Yes	Yes	n/a
Custom Ringtones	n/a	Yes	Yes	Yes	n/a
Real-Music Ringers	n/a	Yes	-	-	n/a
Data & Network
Data Tethering	n/a	Yes	Yes	-	n/a
WAP / Web Browser	n/a	Yes	Yes	Yes	n/a
Input
Predictive Text Entry	n/a	Yes	Yes	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	Yes	-	-	-
Touch Screen	Yes Capacitive	-	-	-	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes	-	-	Yes
Messaging
Email Client	n/a	Yes	-	Yes	n/a
EMS / Picture Messaging	n/a	-	Yes	Yes	n/a
Instant Messaging	n/a	-	-	Yes	n/a
MMS	n/a	Yes	-	Yes	n/a
Text Messaging Templates	n/a	Yes	Yes	Yes	n/a
Music
FM Radio	-	-	-	-	Yes
Headphone Jack (3.5mm)	Yes	Yes	-	-	Yes
Music Player	n/a	Yes	-	-	n/a
Power
Wireless Charging	Yes	-	-	-	-
Productivity
Alarm	n/a	Yes	Yes	Yes	n/a
Calculator	n/a	Yes	Yes	Yes	n/a
Calendar	n/a	Yes	Yes	Yes	n/a
To-Do List	n/a	-	Yes	-	n/a
Voice Memo	n/a	Yes	-	Yes	n/a
Software
BREW	n/a	Yes	-	Yes	n/a
Games	n/a	Yes	Yes	Yes	n/a
Java (J2ME)	n/a	-	Yes	-	n/a
Voice
HD Voice	Yes	-	-	-	Yes
Headset Jack (2.5 mm)	n/a	-	Yes	Yes	n/a
Speaker Phone	Yes	Yes	-	Yes	Yes
	Visible Midnight	ZTE Z431 / Altair	Samsung SGH-E400	Samsung SCH-U430	Microsoft Lumia 550
	X >	< X >	< X >	< X >	< X

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


Phone	Visible Midnight	ZTE Z431 / Altair	Samsung SGH-E400	Samsung SCH-U430	Microsoft Lumia 550