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Phone	Samsung SGH-X640	ZTE Blade Z Max	Kyocera 2325	Samsung SGH-X820	ZTE Blade Spark
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	6" diag. 16 : 9	?	?	5.5" diag. 16 : 9
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD)	?	220 x 176 pixels LCD (TFT/TFD)	720 x 1280 pixels (~267 ppi) LCD (TFT/TFD)
Display Refresh	?	60 Hz	?	?	60 Hz
Battery	800 mAh	4,080 mAh	?	650 mAh	3,140 mAh
Processor	?	1.4 GHz Qualcomm Snapdragon 435 (MSM8940)	?	?	1.4 GHz Qualcomm Snapdragon 425 (MSM8917)
RAM	?	2 GB	?	?	2 GB
Storage	? raw hardware	32 GB	? raw hardware	? raw hardware	16 GB
Main Camera	Yes	16 megapixel	-	2 megapixel	13 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	1080p HD	-	?	1080p HD
Front Camera	-	8 megapixel	-	-	5 megapixel
Weight	3 oz (85g)	6.58 oz (186g)	4.34 oz (123g)	2.33 oz (66g)	6.12 oz (173g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	6.51" x 3.28" x 0.33" (165 x 83 x 8.3 mm)	4.72" x 1.89" x 0.95" (120 x 48 x 24.1 mm)	4.45" x 1.97" x 0.27" (113 x 50 x 6.9 mm)	6.14" x 3.06" x 0.38" (156 x 78 x 9.7 mm)
Form Factor	Clamshell	Slab	Slab	Slab	Slab
Platform / OS	(proprietary)	Android	(proprietary)	(proprietary)	Android
Network Bands	GSM: 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: 900, 1800, 1900	4G LTE: 2, 4, 5, 12, 29, 30 WCDMA: 1, 2, 4, 5 GSM: 850, 900, 1800, 1900 *
Data Technology	GPRS	LTE (Cat 6)	1xRTT	EDGE	LTE (Cat 4)
Features
Fingerprint Reader	-	Yes stand-alone	-	-	Yes stand-alone
Flashlight	-	Yes	-	-	Yes
GPS / Location	-	n/a	Yes	-	n/a
Accessibility
Hearing Aid Compatible	-	Yes M4, T3 (mostly tele-coil compatible)	-	-	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	n/a	Yes	Yes	n/a
TTY/TDD (Digital)	-	Yes	Yes	-	Yes
Connectivity
Bluetooth	-	Yes	-	Yes	Yes
USB	-	Yes USB Type C	-	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	n/a	-	Yes	n/a
Ringer ID	Yes	n/a	-	Yes	n/a
Voice Dialing	-	n/a	Yes	-	n/a
Customization
Custom Graphics	Yes	n/a	-	Yes	n/a
Custom Ringtones	Yes	n/a	Yes	Yes	n/a
Real-Music Ringers	-	n/a	-	Yes	n/a
Data & Network
Data Tethering	-	n/a	Yes	-	n/a
External Antenna Jack	-	n/a	-	Yes	n/a
WAP / Web Browser	Yes	n/a	Yes	Yes	n/a
Input
Predictive Text Entry	Yes	n/a	Yes	Yes	n/a
Side Keys	Yes	Yes	-	Yes	Yes
Touch Screen	-	Yes Capacitive	-	-	Yes Capacitive
Memory
Memory Card Slot	-	Yes	-	-	Yes
Messaging
Email Client	-	n/a	-	Yes	n/a
EMS / Picture Messaging	Yes	n/a	Yes	Yes	n/a
MMS	Yes	n/a	-	Yes	n/a
Text Messaging Templates	Yes	n/a	Yes	Yes	n/a
Music
FM Radio	-	Yes	-	-	-
Headphone Jack (3.5mm)	-	Yes	-	-	Yes
Photo & Video
TV Output	-	-	-	Yes	-
Power
Fast Charging	-	Yes	-	-	-
Productivity
Alarm	Yes	n/a	Yes	Yes	n/a
Calculator	Yes	n/a	Yes	Yes	n/a
Calendar	Yes	n/a	Yes	Yes	n/a
To-Do List	Yes	n/a	-	Yes	n/a
Voice Memo	Yes	n/a	Yes	Yes	n/a
Software
Games	Yes	n/a	Yes	Yes	n/a
Java (J2ME)	Yes	n/a	-	Yes	n/a
Voice
HD Voice	-	Yes	-	-	Yes
Headset Jack (2.5 mm)	Yes	n/a	Yes	-	n/a
Speaker Phone	Yes	Yes	Yes *	Yes	Yes
	* Some versions only
	Samsung SGH-X640	ZTE Blade Z Max	Kyocera 2325	Samsung SGH-X820	ZTE Blade Spark
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	ZTE Blade Z Max	Kyocera 2325	Samsung SGH-X820	ZTE Blade Spark