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Phone	Samsung SGH-X640	AT&T Vista	Samsung Transform Ultra	Motorola V710	ZTE Speed
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	5.5" diag. 18 : 9	3.5" diag. 5 : 3	?	4.5" 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 (~165 ppi) LCD (TFT/TFD)	176 x 220 pixels LCD (TFT/TFD)	540 x 960 pixels (~245 ppi) LCD (TFT/TFD)
Display Refresh	?	60 Hz	60 Hz	?	60 Hz
Battery	800 mAh	2,450 mAh	1,500 mAh	?	2,000 mAh
Processor	?	2 GHz MediaTek Helio A22 (MT6761V)	1 GHz Qualcomm Snapdragon S2 MSM8655	?	1.2 GHz Qualcomm Snapdragon 410 MSM8916
RAM	?	3 GB	?	?	1 GB
Storage	? raw hardware	32 GB	? raw hardware	? raw hardware	8 GB
Main Camera	Yes	8 megapixel	3 megapixel	1 megapixel	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	1080p HD	VGA (640 x 480)	?	720p HD
Front Camera	-	5 megapixel	Yes	-	2 megapixel
Weight	3 oz (85g)	5.51 oz (156g)	4.9 oz (139g)	4.06 oz (115g)	4.8 oz (136g)
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)	4.5" x 2.4" x 0.55" (114 x 61 x 14 mm)	3.7" x 1.93" x 0.92" (94 x 49 x 23.4 mm)	5.3" x 2.6" x 0.4" (135 x 66 x 10.2 mm)
Form Factor	Clamshell	Slab	Slide	Clamshell	Slab
Platform / OS	(proprietary)	Android	Android	(proprietary)	Android
Network Bands	GSM: 900, 1800, 1900	4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30 WCDMA: 1, 2, 4, 5, 8	CDMA: 800, 850, 1900	CDMA: 850, 1900 AMPS: 850	4G LTE: 25, 26, 41 CDMA: 800, 850, 1900
Data Technology	GPRS	LTE (Cat 4)	EVDO rA	1xRTT	LTE (Cat 3)
Features
Flashlight	-	Yes	-	-	-
GPS / Location	-	n/a	n/a	Yes	n/a
Accessibility
Adjustable Text Size	-	n/a	n/a	-	n/a
Hearing Aid Compatible	-	Yes M4, T4 (very tele-coil compatible)	Yes M4 (very compatible)	Yes M3 (mostly compatible)	Yes M3, T4 (very tele-coil compatible)
Multiple Languages	Yes	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	-	-	Yes	Yes	Yes
Alerts
Extra Display	-	-	-	Yes	-
Connectivity
Bluetooth	-	Yes	Yes	Yes	Yes
Mobile Hotspot	-	n/a	n/a	-	n/a
USB	-	Yes USB Type C	Yes	Yes *	Yes Micro-USB
Wi-Fi	-	Yes	Yes 4 (802.11 a,b,g,n)	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	Yes	n/a	n/a	Yes	n/a
Ringer ID	Yes	n/a	n/a	Yes	n/a
Voice Dialing	-	n/a	n/a	Yes	n/a
Customization
Custom Graphics	Yes	n/a	n/a	Yes	n/a
Custom Ringtones	Yes	n/a	n/a	Yes	n/a
Real-Music Ringers	-	n/a	n/a	Yes	n/a
Data & Network
Data Tethering	-	n/a	n/a	Yes	n/a
WAP / Web Browser	Yes	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	Yes
Text Keyboard, Hardware	-	-	Yes	-	-
Touch Screen	-	Yes Capacitive	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	-	Yes	Yes	Yes	Yes
Messaging
Email Client	-	n/a	n/a	Yes *	n/a
EMS / Picture Messaging	Yes	n/a	n/a	Yes	n/a
Instant Messaging	-	n/a	n/a	-	n/a
MMS	Yes	n/a	n/a	Yes	n/a
Text Messaging Templates	Yes	n/a	n/a	Yes	n/a
Music
Headphone Jack (3.5mm)	-	Yes	Yes	-	Yes
Music Player	-	n/a	n/a	Yes	n/a
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	Yes	n/a	n/a	-	n/a
Voice Memo	Yes	n/a	n/a	Yes	n/a
Software
BREW	-	n/a	n/a	Yes	n/a
Games	Yes	n/a	n/a	Yes	n/a
Java (J2ME)	Yes	n/a	n/a	-	n/a
Voice
HD Voice	-	Yes	-	-	Yes
Headset Jack (2.5 mm)	Yes	n/a	n/a	Yes	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung SGH-X640	AT&T Vista	Samsung Transform Ultra	Motorola V710	ZTE Speed
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-X640	AT&T Vista	Samsung Transform Ultra	Motorola V710	ZTE Speed