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Phone	ZTE Prelude / Avail 2	Ericsson T66	Sony Ericsson T68i	AT&T Vista	Pantech Duo C810
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	3.5" diag. 5 : 3	?	?	5.5" diag. 18 : 9	2.2" diag. 4 : 3
Display Resolution & Type	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)	?	101 x 80 pixels LCD (STN)	720 x 1440 pixels (~293 ppi) LCD (TFT/TFD)	240 x 320 pixels (~182 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	?	60 Hz	?
Battery	1,500 mAh	?	700 mAh	2,450 mAh	1,320 mAh
Processor	1 GHz Qualcomm Snapdragon MSM7225A	?	?	2 GHz MediaTek Helio A22 (MT6761V)	ARM 920t PXA27x
RAM	512 MB	?	?	3 GB	?
Storage	4 GB	? raw hardware	? raw hardware	32 GB	? raw hardware
Main Camera	2 megapixel	-	-	8 megapixel	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	VGA (640 x 480)	-	-	1080p HD	QVGA (320 x 240)
Front Camera	-	-	-	5 megapixel	-
Weight	4.4 oz (125g)	2.08 oz (59g)	2.96 oz (84g)	5.51 oz (156g)	3.88 oz (110g)
Dimensions	4.6" x 2.44" x 0.45" (117 x 62 x 11.4 mm)	3.62" x 1.61" x 0.69" (92 x 41 x 17.5 mm)	3.94" x 1.89" x 0.79" (100 x 48 x 20.1 mm)	5.88" x 2.82" x 0.35" (149 x 72 x 8.9 mm)	4.01" x 1.97" x 0.78" (102 x 50 x 19.8 mm)
Form Factor	Slab	Slab	Slab	Slab	Slide
Platform / OS	Android	(proprietary)	(proprietary)	Android	Windows Mobile Standard
Network Bands	WCDMA: 2, 5 GSM: 850, 1900	GSM: 900, 1800, 1900	GSM: 900, 1800, 1900	4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30 WCDMA: 1, 2, 4, 5, 8	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900
Data Technology	HSPA 7.2	-	GPRS	LTE (Cat 4)	HSDPA 1.8
Features
Flashlight	-	-	-	Yes	-
GPS / Location	n/a	-	-	n/a	n/a
Accessibility
Adjustable Text Size	n/a	-	-	n/a	n/a
Hearing Aid Compatible	Yes	-	-	Yes	-
Multiple Languages	n/a	Yes	Yes	n/a	n/a
TTY/TDD (Digital)	Yes	-	-	-	-
Alerts
Ringer Profiles	-	Yes	Yes	-	Yes
Connectivity
Bluetooth	Yes Classic Audio	-	Yes Classic Audio	Yes Classic Audio	Yes Classic Audio
Infrared (IR)	-	-	Yes	-	-
USB	Yes	-	-	Yes USB Type C	Yes
Wi-Fi	Yes 4 (802.11 b,g,n)	-	-	Yes	-
Contacts
Picture ID	n/a	-	Yes	n/a	n/a
Ringer ID	n/a	-	Yes	n/a	n/a
Voice Dialing	n/a	-	Yes	n/a	n/a
Customization
Custom Graphics	n/a	Yes	Yes	n/a	n/a
Custom Ringtones	n/a	Yes	Yes	n/a	n/a
Real-Music Ringers	n/a	-	-	n/a	n/a
Data & Network
Data Tethering	n/a	-	Yes	n/a	n/a
WAP / Web Browser	n/a	Yes	Yes	n/a	n/a
Input
Predictive Text Entry	n/a	Yes	Yes	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	-	-	Yes
Touch Screen	Yes	-	-	Yes	-
Memory
Memory Card Slot	Yes	-	-	Yes	Yes
Messaging
Email Client	n/a	-	Yes	n/a	n/a
EMS / Picture Messaging	n/a	Yes	Yes	n/a	n/a
Instant Messaging	n/a	-	-	n/a	n/a
MMS	n/a	-	Yes	n/a	n/a
Text Messaging Templates	n/a	Yes	Yes	n/a	n/a
Music
Headphone Jack (3.5mm)	Yes	-	-	Yes	-
Music Player	n/a	-	-	n/a	n/a
Productivity
Alarm	n/a	Yes	Yes	n/a	n/a
Calculator	n/a	Yes	Yes	n/a	n/a
Calendar	n/a	Yes	Yes	n/a	n/a
To-Do List	n/a	Yes	Yes	n/a	n/a
Voice Memo	n/a	-	Yes	n/a	n/a
Software
Games	n/a	Yes	Yes	n/a	n/a
Voice
HD Voice	-	-	-	Yes	-
Speaker Phone	Yes	-	-	Yes	Yes
	ZTE Prelude / Avail 2	Ericsson T66	Sony Ericsson T68i	AT&T Vista	Pantech Duo C810
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NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	ZTE Prelude / Avail 2	Ericsson T66	Sony Ericsson T68i	AT&T Vista	Pantech Duo C810