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Phone	Samsung SGH-X640	Nokia 1661	ZTE Grand X	Samsung SGH-C225	NEC Terrain
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	?	3.1" diag. 4 : 3
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	128 x 160 pixels (~114 ppi) LCD (TFT/TFD)	540 x 960 pixels (~220 ppi) LCD (TFT/TFD)	128 x 128 pixels LCD (TFT/TFD)	480 x 640 pixels (~258 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	60 Hz
Battery	800 mAh	860 mAh	2,300 mAh	?	1,900 mAh
Processor	?	?	1.2 GHz Qualcomm Snapdragon 200 MSM8210	?	1.5 GHz Qualcomm Snapdragon S4 Plus MSM8960
RAM	?	?	1 GB	?	1 GB
Storage	? raw hardware	? raw hardware	4 GB	? raw hardware	8 GB
Main Camera	Yes	-	5 megapixel	-	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	-	720p HD	-	720p HD
Front Camera	-	-	1 megapixel	-	Yes
Weight	3 oz (85g)	2.9 oz (82g)	6.06 oz (172g)	3.4 oz (96g)	6.06 oz (172g)
Dimensions	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)	5.7" x 2.87" x 0.37" (145 x 73 x 9.4 mm)	4.3" x 1.8" x 0.9" (109 x 46 x 22.9 mm)	5.02" x 2.54" x 0.57" (128 x 65 x 14.5 mm)
Form Factor	Clamshell	Slab	Slab	Slab	Slab
Platform / OS	(proprietary)	(proprietary)	Android	(proprietary)	Android
Network Bands	GSM: 900, 1800, 1900	GSM: 850, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	GSM: 900, 1900	4G LTE: 2, 4, 5, 17 WCDMA: 1, 2, 5 GSM: 850, 1900
Data Technology	GPRS	-	HSPA+ 21	GPRS	LTE (Cat 3)
Features
Flashlight	-	Yes	-	-	-
GPS / Location	-	-	n/a	-	n/a
Ruggedized	-	-	-	-	Yes
Water-Resistant	-	-	-	-	Yes IPX7 (snorkeling)
Accessibility
Adjustable Text Size	-	-	n/a	-	n/a
Hearing Aid Compatible	-	-	Yes M3, T3 (mostly tele-coil compatible)	-	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	-	n/a	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 Micro-USB	-	Yes Micro-USB
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	-	n/a
Customization
Custom Graphics	Yes	-	n/a	Yes	n/a
Custom Ringtones	Yes	-	n/a	Yes	n/a
Real-Music Ringers	-	-	n/a	-	n/a
Data & Network
Data Tethering	-	-	n/a	Yes	n/a
WAP / Web Browser	Yes	-	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	Yes	n/a	Yes	n/a
Side Keys	Yes	-	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	-	-	Yes
Touch Screen	-	-	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	-	-	Yes	-	Yes
Messaging
Email Client	-	-	n/a	-	n/a
EMS / Picture Messaging	Yes	-	n/a	Yes	n/a
Instant Messaging	-	-	n/a	Yes	n/a
MMS	Yes	-	n/a	Yes	n/a
Text Messaging Templates	Yes	-	n/a	Yes	n/a
Music
FM Radio	-	Yes	-	-	Yes
Headphone Jack (3.5mm)	-	-	Yes	-	Yes
Music Player	-	-	n/a	-	n/a
Productivity
Alarm	Yes	Yes	n/a	Yes	n/a
Calculator	Yes	Yes	n/a	Yes	n/a
Calendar	Yes	Yes	n/a	Yes	n/a
To-Do List	Yes	-	n/a	Yes	n/a
Voice Memo	Yes	Yes	n/a	Yes	n/a
Software
Games	Yes	Yes	n/a	Yes	n/a
Java (J2ME)	Yes	-	n/a	Yes	n/a
Voice
HD Voice	-	-	Yes	-	-
Headset Jack (2.5 mm)	Yes	Yes	n/a	Yes	n/a
Push-To-Talk	-	-	-	-	Yes
Speaker Phone	Yes	Yes	Yes	-	Yes
	Samsung SGH-X640	Nokia 1661	ZTE Grand X	Samsung SGH-C225	NEC Terrain
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	Nokia 1661	ZTE Grand X	Samsung SGH-C225	NEC Terrain