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Specifications
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Phone	ZTE Z998 / Unico LTE	Samsung SPH-A660 / VI660	Samsung Transform	Sanyo SCP-3810 / Mirro	Nokia 6555
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4.5" diag. 16 : 9	?	3.5" diag. 5 : 3	2.4" diag. 4 : 3	2" diag. 4 : 3
Display Resolution & Type	540 x 960 pixels (~245 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (Color)	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	240 x 320 pixels (~200 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	60 Hz	?	?
Battery	2,070 mAh	?	1,500 mAh	1,000 mAh	1,020 mAh
Processor	1.2 GHz Qualcomm Snapdragon 400 MSM8930	?	800 MHz Samsung S3C6410, Qualcomm QSC6085	?	?
RAM	1 GB	?	?	?	?
Storage	4 GB	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	5 megapixel	-	3 megapixel	1 megapixel	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	720p HD	-	QVGA (320 x 240)	-	QCIF (176 x 144)
Front Camera	1 megapixel	-	Yes	-	-
Weight	4.8 oz (136g)	3.54 oz (100g)	5.37 oz (152g)	3.97 oz (112g)	3.42 oz (97g)
Dimensions	5.2" x 2.6" x 0.4" (132 x 66 x 10.2 mm)	3.3" x 1.8" x 0.87" (84 x 46 x 22.1 mm)	4.61" x 2.42" x 0.61" (117 x 61 x 15.5 mm)	3.82" x 2.01" x 0.71" (97 x 51 x 18.1 mm)	3.92" x 1.74" x 0.77" (100 x 44 x 19.6 mm)
Form Factor	Slab	Clamshell	Slide	Clamshell	Clamshell
Platform / OS	Android	(proprietary)	Android	(proprietary)	(proprietary)
Network Bands	4G LTE: 2, 4, 5, 17 WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900 AMPS: 850	CDMA: 850, 1900	CDMA: 850, 1900	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 *
Data Technology	LTE (Cat 3)	1xRTT	EVDO rA	1xRTT	WCDMA (UMTS)
Features
GPS / Location	n/a	Yes	n/a	Yes	-
Accessibility
Adjustable Text Size	n/a	-	n/a	Yes	Yes
Hearing Aid Compatible	Yes M3, T4 (very tele-coil compatible)	-	Yes M4, T3 (mostly tele-coil compatible)	Yes M4, T4 (very tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	n/a	Yes	n/a	Yes	Yes
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Extra Display	-	-	-	Yes	Yes
Ringer Profiles	-	-	-	-	Yes
Connectivity
Bluetooth	Yes	-	Yes	Yes	Yes
Mobile Hotspot	n/a	-	n/a	-	-
USB	Yes Micro-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)	-	-
Contacts
Picture ID	n/a	Yes	n/a	Yes	Yes
Ringer ID	n/a	Yes	n/a	Yes	Yes
Voice Dialing	n/a	Yes	n/a	Yes	Yes
Customization
Custom Graphics	n/a	Yes	n/a	Yes	Yes
Custom Ringtones	n/a	Yes	n/a	Yes	Yes
Real-Music Ringers	n/a	-	n/a	Yes	Yes
Data & Network
Data Tethering	n/a	Yes	n/a	Yes	Yes
WAP / Web Browser	n/a	Yes	n/a	Yes	Yes
Input
Predictive Text Entry	n/a	Yes	n/a	Yes	Yes
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	Yes	-	-
Touch Screen	Yes Capacitive	-	Yes Capacitive	-	-
Memory
Memory Card Slot	Yes	-	Yes	-	Yes
Messaging
Email Client	n/a	-	n/a	Yes	Yes
Instant Messaging	n/a	-	n/a	Yes	Yes
MMS	n/a	-	n/a	-	Yes
Text Messaging Templates	n/a	-	n/a	Yes	Yes
Music
Headphone Jack (3.5mm)	Yes	-	Yes	-	-
Music Player	n/a	-	n/a	-	Yes
Productivity
Alarm	n/a	Yes	n/a	Yes	Yes
Calculator	n/a	Yes	n/a	Yes	Yes
Calendar	n/a	Yes	n/a	Yes	Yes
To-Do List	n/a	Yes	n/a	Yes	Yes
Voice Memo	n/a	Yes	n/a	Yes	Yes
Software
Games	n/a	Yes	n/a	Yes	Yes
Java (J2ME)	n/a	Yes	n/a	Yes	Yes
Voice
Headset Jack (2.5 mm)	n/a	Yes	n/a	Yes	Yes
Push-To-Talk	-	-	-	-	Yes *
Speaker Phone	Yes	-	Yes	Yes	Yes
	* Some versions only
	ZTE Z998 / Unico LTE	Samsung SPH-A660 / VI660	Samsung Transform	Sanyo SCP-3810 / Mirro	Nokia 6555
	X >	< X >	< X >	< X >	< X

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


Phone	ZTE Z998 / Unico LTE	Samsung SPH-A660 / VI660	Samsung Transform	Sanyo SCP-3810 / Mirro	Nokia 6555