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Phone	ZTE Blade Z Max	Samsung SGH-X640	Nokia 1661	Samsung SCH-A610	Kyocera DuraForce
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	6" diag. 16 : 9	?	1.8" diag. 4 : 3	?	4.5" diag. 16 : 9
Display Resolution & Type	1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	128 x 160 pixels (~114 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	720 x 1280 pixels (~326 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	?	?	60 Hz
Battery	4,080 mAh	800 mAh	860 mAh	1,300 mAh	3,100 mAh
Processor	1.4 GHz Qualcomm Snapdragon 435 (MSM8940)	?	?	?	1.4 GHz Qualcomm Snapdragon 400 (MSM8928)
RAM	2 GB	?	?	?	2 GB
Storage	32 GB	? raw hardware	? raw hardware	? raw hardware	16 GB
Main Camera	16 megapixel	Yes	-	Yes	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	1080p HD	-	-	-	1080p HD
Front Camera	8 megapixel	-	-	-	2 megapixel
Weight	6.58 oz (186g)	3 oz (85g)	2.9 oz (82g)	4.23 oz (120g)	7.06 oz (200g)
Dimensions	6.51" x 3.28" x 0.33" (165 x 83 x 8.3 mm)	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.25" x 1.8" x 0.53" (108 x 46 x 13.5 mm)	3.5" x 1.9" x 0.9" (89 x 48 x 22.9 mm)	5.39" x 2.78" x 0.55" (137 x 71 x 14 mm)
Form Factor	Slab	Clamshell	Slab	Clamshell	Slab
Platform / OS	Android	(proprietary)	(proprietary)	(proprietary)	Android
Network Bands	4G LTE: 2, 4, 5, 12, 66 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	GSM: 900, 1800, 1900	GSM: 850, 1900	CDMA: 850, 1900	4G LTE: 1, 2, 4, 5, 7, 17 WCDMA: 1, 2, 5, 8 GSM: 850, 900, 1800, 1900 *
Data Technology	LTE (Cat 6)	GPRS	-	1xRTT	LTE (Cat 3)
Features
Fingerprint Reader	Yes stand-alone	-	-	-	-
Flashlight	Yes	-	Yes	-	Yes
GPS / Location	n/a	-	-	Yes	n/a
Ruggedized	-	-	-	-	Yes
Water-Resistant	-	-	-	-	Yes IPX8 (SCUBA)
Accessibility
Adjustable Text Size	n/a	-	-	-	n/a
Hearing Aid Compatible	Yes M4, T3 (mostly tele-coil compatible)	-	-	-	Yes M4, T3 (mostly tele-coil compatible)
Multiple Languages	n/a	Yes	-	Yes	n/a
TTY/TDD (Digital)	Yes	-	-	-	Yes
Alerts
Ringer Profiles	-	-	Yes	-	-
Connectivity
Bluetooth	Yes	-	-	-	Yes
Mobile Hotspot	n/a	-	-	-	n/a
NFC	-	-	-	-	Yes
USB	Yes USB Type C	-	-	-	Yes Micro-USB
Wi-Fi	Yes 4 (802.11 b,g,n)	-	-	-	Yes 5 (802.11 a,ac,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	n/a
Custom Ringtones	n/a	Yes	-	Yes	n/a
Real-Music Ringers	n/a	-	-	-	n/a
Data & Network
Data Tethering	n/a	-	-	Yes	n/a
WAP / Web Browser	n/a	Yes	-	Yes	n/a
Input
Predictive Text Entry	n/a	Yes	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	-	-	-	n/a
EMS / Picture Messaging	n/a	Yes	-	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	-	Yes	-	-
Headphone Jack (3.5mm)	Yes	-	-	-	Yes
Music Player	n/a	-	-	-	n/a
Stereo Speakers	-	-	-	-	Yes
Photo & Video
DLNA	-	-	-	-	Yes
Miracast	-	-	-	-	Yes
Power
Fast Charging	Yes	-	-	-	-
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	-	Yes	n/a
Voice Memo	n/a	Yes	Yes	Yes	n/a
Software
BREW	n/a	-	-	Yes	n/a
Games	n/a	Yes	Yes	Yes	n/a
Java (J2ME)	n/a	Yes	-	-	n/a
Voice
HD Voice	Yes	-	-	-	-
Headset Jack (2.5 mm)	n/a	Yes	Yes	Yes	n/a
Push-To-Talk	-	-	-	-	Yes *
Speaker Phone	Yes	Yes	Yes	-	Yes
	* Some versions only
	ZTE Blade Z Max	Samsung SGH-X640	Nokia 1661	Samsung SCH-A610	Kyocera DuraForce
	X >	< X >	< X >	< X >	< X

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


Phone	ZTE Blade Z Max	Samsung SGH-X640	Nokia 1661	Samsung SCH-A610	Kyocera DuraForce