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Phone	Samsung SGH-X640	AT&T Vista	HTC myTouch 3G / Magic	Nokia E66	ZTE Blade Vantage
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	5.5" diag. 18 : 9	3.2" diag. 5 : 3	2.4" diag. 4 : 3	5" diag. 16 : 9
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	720 x 1440 pixels (~293 ppi) LCD (TFT/TFD)	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	480 x 854 pixels (~196 ppi) LCD (TFT/TFD)
Display Refresh	?	60 Hz	60 Hz	?	60 Hz
Battery	800 mAh	2,450 mAh	1,340 mAh	1,000 mAh	2,500 mAh
Processor	?	2 GHz MediaTek Helio A22 (MT6761V)	528 MHz Qualcomm MSM-7200a	?	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)
RAM	?	3 GB	?	?	2 GB
Storage	? raw hardware	32 GB	? raw hardware	? raw hardware	16 GB
Main Camera	Yes	8 megapixel	3 megapixel	3 megapixel	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	1080p HD	CIF (352 x 288)	QVGA (320 x 240)	720p HD
Front Camera	-	5 megapixel	-	-	2 megapixel
Weight	3 oz (85g)	5.51 oz (156g)	4.1 oz (116g)	4.27 oz (121g)	5.29 oz (150g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	5.88" x 2.82" x 0.35" (149 x 72 x 8.9 mm)	4.45" x 2.19" x 0.58" (113 x 56 x 14.7 mm)	4.21" x 1.93" x 0.51" (107 x 49 x 13 mm)	5.73" x 2.85" x 0.36" (146 x 72 x 9.2 mm)
Form Factor	Clamshell	Slab	Slab	Slide	Slab
Platform / OS	(proprietary)	Android	Android	S60 (Symbian)	Android
Network Bands	GSM: 900, 1800, 1900	4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30 WCDMA: 1, 2, 4, 5, 8	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900 *	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 *	4G LTE: 2, 4, 5, 13
Data Technology	GPRS	LTE (Cat 4)	HSPA 7.2	HSDPA 3.6	LTE (Cat 4)
Features
Flashlight	-	Yes	-	-	Yes
GPS / Location	-	n/a	n/a	n/a	n/a
Accessibility
Hearing Aid Compatible	-	Yes M4, T4 (very tele-coil compatible)	-	-	Yes M4, T4 (very tele-coil compatible)
Multiple Languages	Yes	n/a	n/a	n/a	n/a
TTY/TDD (Digital)	-	-	-	-	Yes
Alerts
Ringer Profiles	-	-	-	Yes	-
Connectivity
Bluetooth	-	Yes	Yes	Yes	Yes
Infrared (IR)	-	-	-	Yes	-
USB	-	Yes USB Type C	Yes Mini-USB	Yes Micro-USB	Yes Micro-USB
Wi-Fi	-	Yes	Yes 802.11 b,g	Yes 802.11 b,g	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	Yes	n/a	n/a	n/a	n/a
Ringer ID	Yes	n/a	n/a	n/a	n/a
Voice Dialing	-	n/a	n/a	n/a	n/a
Customization
Changeable Body Plates	-	-	Yes	-	-
Custom Graphics	Yes	n/a	n/a	n/a	n/a
Custom Ringtones	Yes	n/a	n/a	n/a	n/a
Real-Music Ringers	-	n/a	n/a	n/a	n/a
Data & Network
Data Tethering	-	n/a	n/a	n/a	n/a
WAP / Web Browser	Yes	n/a	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Touch Screen	-	Yes Capacitive	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	-	Yes	Yes	Yes	Yes
Messaging
Email Client	-	n/a	n/a	n/a	n/a
EMS / Picture Messaging	Yes	n/a	n/a	n/a	n/a
Instant Messaging	-	n/a	n/a	n/a	n/a
MMS	Yes	n/a	n/a	n/a	n/a
Text Messaging Templates	Yes	n/a	n/a	n/a	n/a
Music
FM Radio	-	-	-	Yes	-
Headphone Jack (3.5mm)	-	Yes	Yes *	-	Yes
Music Player	-	n/a	n/a	n/a	n/a
Photo & Video
Video Calling	-	n/a	n/a	n/a	n/a
Productivity
Alarm	Yes	n/a	n/a	n/a	n/a
Calculator	Yes	n/a	n/a	n/a	n/a
Calendar	Yes	n/a	n/a	n/a	n/a
To-Do List	Yes	n/a	n/a	n/a	n/a
Voice Memo	Yes	n/a	n/a	n/a	n/a
Software
Games	Yes	n/a	n/a	n/a	n/a
Java (J2ME)	Yes	n/a	n/a	n/a	n/a
Voice
HD Voice	-	Yes	-	-	Yes
Headset Jack (2.5 mm)	Yes	n/a	n/a	n/a	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung SGH-X640	AT&T Vista	HTC myTouch 3G / Magic	Nokia E66	ZTE Blade Vantage
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	AT&T Vista	HTC myTouch 3G / Magic	Nokia E66	ZTE Blade Vantage