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Phone	ZTE Z998 / Unico LTE	Samsung Trance SCH-U490	Palm Treo 650 (CDMA)	Motorola V551 / V330 / V547 / V555 / V557	Samsung Sidekick 4G
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4.5" diag. 16 : 9	2.1" diag. 4 : 3	?	?	3.5" diag. 5 : 3
Display Resolution & Type	540 x 960 pixels (~245 ppi) LCD (TFT/TFD)	176 x 220 pixels (~134 ppi) LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)	176 x 220 pixels LCD (TFT/TFD)	480 x 800 pixels (~267 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	?	?	60 Hz
Battery	2,070 mAh	?	?	820 mAh	?
Processor	1.2 GHz Qualcomm Snapdragon 400 MSM8930	?	312 MHz Intel XScale PXA270	?	1 GHz Samsung Hummingbird Cortex A8
RAM	1 GB	?	?	?	?
Storage	4 GB	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	5 megapixel	1 megapixel	Yes	Yes	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	720p HD	-	QVGA (320 x 240)	?	WVGA / 480p
Front Camera	1 megapixel	-	-	-	Yes
Weight	4.8 oz (136g)	3.53 oz (100g)	6.3 oz (179g)	4.23 oz (120g)	5.7 oz (162g)
Dimensions	5.2" x 2.6" x 0.4" (132 x 66 x 10.2 mm)	4" x 1.97" x 0.55" (102 x 50 x 14 mm)	4.4" x 2.3" x 0.9" (112 x 58 x 22.9 mm)	3.5" x 1.93" x 0.97" (89 x 49 x 24.6 mm)	5" x 2.42" x 0.6" (127 x 61 x 15.2 mm)
Form Factor	Slab	Slide	Slab	Clamshell	Slide
Platform / OS	Android	(proprietary)	Palm OS	(proprietary)	Android
Network Bands	4G LTE: 2, 4, 5, 17 WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900	CDMA: 850, 1900	GSM: 850, 900, 1800, 1900 *	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900
Data Technology	LTE (Cat 3)	1xRTT	1xRTT	EDGE	HSPA+ 21
Features
GPS / Location	n/a	Yes	n/a	-	n/a
Accessibility
Adjustable Text Size	n/a	Yes	n/a	-	n/a
Hearing Aid Compatible	Yes M3, T4 (very tele-coil compatible)	Yes M4, T3 (mostly tele-coil compatible)	-	-	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	n/a	Yes	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	-	Yes	Yes
Alerts
Extra Display	-	-	-	Yes	-
Ringer Profiles	-	-	-	Yes	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Infrared (IR)	-	-	Yes	-	-
Mobile Hotspot	n/a	-	n/a	-	n/a
USB	Yes Micro-USB	Yes	-	Yes	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	n/a
Ringer ID	n/a	Yes	n/a	Yes	n/a
Voice Dialing	n/a	Yes	n/a	Yes	n/a
Customization
Custom Graphics	n/a	Yes	n/a	Yes	n/a
Custom Ringtones	n/a	Yes	n/a	Yes	n/a
Real-Music Ringers	n/a	Yes	n/a	Yes	n/a
Data & Network
Data Tethering	n/a	Yes	n/a	Yes	n/a
WAP / Web Browser	n/a	Yes	n/a	Yes	n/a
Input
Predictive Text Entry	n/a	Yes	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	Yes	-	Yes
Touch Screen	Yes Capacitive	-	Yes	-	Yes
Memory
Memory Card Slot	Yes	Yes	Yes	-	Yes
Messaging
Email Client	n/a	-	n/a	Yes	n/a
EMS / Picture Messaging	n/a	-	n/a	Yes	n/a
Instant Messaging	n/a	-	n/a	Yes	n/a
MMS	n/a	Yes	n/a	Yes	n/a
Text Messaging Templates	n/a	Yes	n/a	Yes	n/a
Music
Headphone Jack (3.5mm)	Yes	Yes	-	-	Yes
Music Player	n/a	Yes	n/a	-	n/a
Photo & Video
DLNA	-	-	-	-	Yes
Productivity
Alarm	n/a	Yes	n/a	Yes	n/a
Calculator	n/a	Yes	n/a	Yes	n/a
Calendar	n/a	Yes	n/a	Yes	n/a
To-Do List	n/a	-	n/a	-	n/a
Voice Memo	n/a	Yes	n/a	Yes	n/a
Software
BREW	n/a	Yes	n/a	-	n/a
Games	n/a	Yes	n/a	Yes	n/a
Java (J2ME)	n/a	-	n/a	Yes	n/a
Voice
Headset Jack (2.5 mm)	n/a	-	n/a	Yes	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	ZTE Z998 / Unico LTE	Samsung Trance SCH-U490	Palm Treo 650 (CDMA)	Motorola V551 / V330 / V547 / V555 / V557	Samsung Sidekick 4G
	X >	< X >	< X >	< X >	< X

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


Phone	ZTE Z998 / Unico LTE	Samsung Trance SCH-U490	Palm Treo 650 (CDMA)	Motorola V551 / V330 / V547 / V555 / V557	Samsung Sidekick 4G