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Phone	ZTE Blade Spark	Samsung SGH-X640	Samsung SPH-N400	Kyocera Coast / Kona	Nokia N78
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	5.5" diag. 16 : 9	?	?	2.4" diag. 4 : 3	2.4" diag. 4 : 3
Display Resolution & Type	720 x 1280 pixels (~267 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	128 x 128 pixels LCD (STN)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	?	?	?
Battery	3,140 mAh	800 mAh	?	870 mAh	1,200 mAh
Processor	1.4 GHz Qualcomm Snapdragon 425 (MSM8917)	?	?	480 MHz Qualcomm QSC6155	369 MHz ARM 11
RAM	2 GB	?	?	128 MB	?
Storage	16 GB	? raw hardware	? raw hardware	256 MB	? raw hardware
Main Camera	13 megapixel	Yes	-	2 megapixel	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	1080p HD	-	-	-	VGA (640 x 480)
Front Camera	5 megapixel	-	-	-	-
Weight	6.12 oz (173g)	3 oz (85g)	4 oz (113g)	3.7 oz (105g)	3.59 oz (102g)
Dimensions	6.14" x 3.06" x 0.38" (156 x 78 x 9.7 mm)	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.25" x 2.04" x 0.82" (108 x 52 x 20.8 mm)	3.94" x 2.05" x 0.68" (100 x 52 x 17.3 mm)	4.45" x 1.93" x 0.59" (113 x 49 x 15.1 mm)
Form Factor	Slab	Clamshell	Flip	Clamshell	Slab
Platform / OS	Android	(proprietary)	(proprietary)	(proprietary)	S60 (Symbian)
Network Bands	4G LTE: 2, 4, 5, 12, 29, 30 WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900 *	GSM: 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850	CDMA: 800, 850, 1700, 1900 *	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 *
Data Technology	LTE (Cat 4)	GPRS	1xRTT	1xRTT	HSDPA 3.6
Features
Fingerprint Reader	Yes stand-alone	-	-	-	-
Flashlight	Yes	-	-	-	-
GPS / Location	n/a	-	Yes	Yes	n/a
Accessibility
Adjustable Text Size	n/a	-	-	Yes	n/a
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	-	-	Yes M4, T4 (very tele-coil compatible)	-
Multiple Languages	n/a	Yes	Yes	Yes	n/a
TTY/TDD (Digital)	Yes	-	Yes	Yes	-
Alerts
Extra Display	-	-	-	Yes	-
Ringer Profiles	-	-	-	-	Yes
Connectivity
Bluetooth	Yes	-	-	Yes	Yes
USB	Yes USB Type C	-	Yes	Yes Micro-USB	Yes Micro-USB
Wi-Fi	Yes 4 (802.11 b,g,n)	-	-	-	Yes 802.11 b,g
Contacts
Picture ID	n/a	Yes	Yes	Yes	n/a
Ringer ID	n/a	Yes	Yes	Yes	n/a
Voice Dialing	n/a	-	Yes	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	-	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
Touch Screen	Yes Capacitive	-	-	-	-
Memory
Memory Card Slot	Yes	-	-	-	Yes
Messaging
Email Client	n/a	-	-	-	n/a
EMS / Picture Messaging	n/a	Yes	-	-	n/a
Instant Messaging	n/a	-	-	-	n/a
MMS	n/a	Yes	-	Yes	n/a
Text Messaging Templates	n/a	Yes	-	Yes	n/a
Music
FM Radio	-	-	-	-	Yes
FM Transmitter	n/a	-	-	-	n/a
Headphone Jack (3.5mm)	Yes	-	-	Yes	Yes
Music Player	n/a	-	-	-	n/a
Stereo Speakers	-	-	-	-	Yes
Photo & Video
TV Output	-	-	-	-	Yes
Video Calling	n/a	-	-	-	n/a
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	Yes	-	n/a
Voice Memo	n/a	Yes	-	Yes	n/a
Software
Games	n/a	Yes	Yes	Yes	n/a
Java (J2ME)	n/a	Yes	Yes	Yes	n/a
Voice
HD Voice	Yes	-	-	-	-
Headset Jack (2.5 mm)	n/a	Yes	Yes	-	n/a
Push-To-Talk	-	-	-	-	Yes *
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	ZTE Blade Spark	Samsung SGH-X640	Samsung SPH-N400	Kyocera Coast / Kona	Nokia N78
	X >	< X >	< X >	< X >	< X

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


Phone	ZTE Blade Spark	Samsung SGH-X640	Samsung SPH-N400	Kyocera Coast / Kona	Nokia N78