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Phone	Nokia 1661	ZTE Blade Vantage	Nokia Lumia 635 (CDMA)	Samsung SGH-X640	Kyocera Event
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	1.8" diag. 4 : 3	5" diag. 16 : 9	4.5" diag. 16 : 9	?	3.5" diag. 5 : 3
Display Resolution & Type	128 x 160 pixels (~114 ppi) LCD (TFT/TFD)	480 x 854 pixels (~196 ppi) LCD (TFT/TFD)	480 x 854 pixels (~218 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)
Display Refresh	?	60 Hz	?	?	60 Hz
Battery	860 mAh	2,500 mAh	1,830 mAh	800 mAh	1,500 mAh
Processor	?	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)	1.2 GHz Qualcomm Snapdragon 400 (MSM8926)	?	1 GHz Qualcomm Snapdragon S2 MSM8655
RAM	?	2 GB	512 MB	?	512 MB
Storage	? raw hardware	16 GB	8 GB	? raw hardware	4 GB
Main Camera	-	8 megapixel	5 megapixel	Yes	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	720p HD	720p HD	-	WVGA / 480p
Front Camera	-	2 megapixel	-	-	-
Weight	2.9 oz (82g)	5.29 oz (150g)	4.73 oz (134g)	3 oz (85g)	4.1 oz (116g)
Dimensions	4.25" x 1.8" x 0.53" (108 x 46 x 13.5 mm)	5.73" x 2.85" x 0.36" (146 x 72 x 9.2 mm)	5.1" x 2.63" x 0.36" (130 x 67 x 9.1 mm)	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.53" x 2.41" x 0.46" (115 x 61 x 11.7 mm)
Form Factor	Slab	Slab	Slab	Clamshell	Slab
Platform / OS	(proprietary)	Android	Windows	(proprietary)	Android
Network Bands	GSM: 850, 1900	4G LTE: 2, 4, 5, 13	4G LTE: 25, 26, 41 WCDMA: 1, 2, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900	GSM: 900, 1800, 1900	CDMA: 1900
Data Technology	-	LTE (Cat 4)	LTE (Cat 3)	GPRS	EVDO rA
Features
Flashlight	Yes	Yes	-	-	-
GPS / Location	-	n/a	n/a	-	n/a
Accessibility
Adjustable Text Size	-	n/a	n/a	-	n/a
Hearing Aid Compatible	-	Yes M4, T4 (very tele-coil compatible)	Yes M3, T4 (very tele-coil compatible)	-	Yes M4, T4 (very tele-coil compatible)
Multiple Languages	-	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	-	Yes	Yes	-	Yes
Alerts
Ringer Profiles	Yes	-	-	-	-
Connectivity
Bluetooth	-	Yes	Yes	-	Yes
Mobile Hotspot	-	n/a	n/a	-	n/a
USB	-	Yes Micro-USB	Yes Micro-USB	-	Yes Micro-USB
Wi-Fi	-	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	-	n/a	n/a	Yes	n/a
Ringer ID	-	n/a	n/a	Yes	n/a
Voice Dialing	-	n/a	n/a	-	n/a
Customization
Custom Graphics	-	n/a	n/a	Yes	n/a
Custom Ringtones	-	n/a	n/a	Yes	n/a
Real-Music Ringers	-	n/a	n/a	-	n/a
Data & Network
Data Tethering	-	n/a	n/a	-	n/a
WAP / Web Browser	-	n/a	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	Yes	n/a
Side Keys	-	Yes	Yes	Yes	Yes
Touch Screen	-	Yes Capacitive	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	-	Yes	Yes	-	Yes
Messaging
Email Client	-	n/a	n/a	-	n/a
EMS / Picture Messaging	-	n/a	n/a	Yes	n/a
Instant Messaging	-	n/a	n/a	-	n/a
MMS	-	n/a	n/a	Yes	n/a
Text Messaging Templates	-	n/a	n/a	Yes	n/a
Music
FM Radio	Yes	-	Yes	-	-
Headphone Jack (3.5mm)	-	Yes	Yes	-	Yes
Music Player	-	n/a	n/a	-	n/a
Photo & Video
DLNA	-	-	Yes	-	-
Productivity
Alarm	Yes	n/a	n/a	Yes	n/a
Calculator	Yes	n/a	n/a	Yes	n/a
Calendar	Yes	n/a	n/a	Yes	n/a
To-Do List	-	n/a	n/a	Yes	n/a
Voice Memo	Yes	n/a	n/a	Yes	n/a
Software
Games	Yes	n/a	n/a	Yes	n/a
Java (J2ME)	-	n/a	n/a	Yes	n/a
Voice
HD Voice	-	Yes	-	-	-
Headset Jack (2.5 mm)	Yes	n/a	n/a	Yes	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Nokia 1661	ZTE Blade Vantage	Nokia Lumia 635 (CDMA)	Samsung SGH-X640	Kyocera Event
	X >	< X >	< X >	< X >	< X

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


Phone	Nokia 1661	ZTE Blade Vantage	Nokia Lumia 635 (CDMA)	Samsung SGH-X640	Kyocera Event