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Phone	Nokia N78	ZTE Prelude / Avail 2	HTC Merge	Samsung Droid Charge	Nokia 2660
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2.4" diag. 4 : 3	3.5" diag. 5 : 3	3.8" diag. 5 : 3	4.3" diag. 5 : 3	?
Display Resolution & Type	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)	480 x 800 pixels (~246 ppi) LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) AMOLED	128 x 160 pixels LCD (STN)
Display Refresh	?	60 Hz	60 Hz	60 Hz	?
Battery	1,200 mAh	1,500 mAh	1,400 mAh	1,500 mAh	700 mAh
Processor	369 MHz ARM 11	1 GHz Qualcomm Snapdragon MSM7225A	800 MHz Qualcomm S2 MSM7630	1 GHz Samsung Hummingbird	?
RAM	?	512 MB	?	?	?
Storage	? raw hardware	4 GB	? raw hardware	? raw hardware	? raw hardware
Main Camera	3 megapixel	2 megapixel	5 megapixel	8 megapixel	-
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	VGA (640 x 480)	VGA (640 x 480)	720p HD	720p HD	-
Front Camera	-	-	-	1 megapixel	-
Weight	3.59 oz (102g)	4.4 oz (125g)	6.98 oz (198g)	5.06 oz (144g)	2.79 oz (79g)
Dimensions	4.45" x 1.93" x 0.59" (113 x 49 x 15.1 mm)	4.6" x 2.44" x 0.45" (117 x 62 x 11.4 mm)	4.74" x 2.43" x 0.59" (120 x 62 x 15 mm)	5.1" x 2.68" x 0.46" (130 x 68 x 11.7 mm)	3.43" x 1.76" x 0.81" (87 x 45 x 20.6 mm)
Form Factor	Slab	Slab	Slide	Slab	Clamshell
Platform / OS	S60 (Symbian)	Android	Android	Android	(proprietary)
Network Bands	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 *	WCDMA: 2, 5 GSM: 850, 1900	WCDMA: 1 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900	4G LTE: 13 CDMA: 850, 1900	GSM: 850, 1900 *
Data Technology	HSDPA 3.6	HSPA 7.2	EVDO rA	LTE (Cat 3)	EDGE
Features
Flashlight	-	-	Yes	-	-
GPS / Location	n/a	n/a	n/a	n/a	-
Accessibility
Adjustable Text Size	n/a	n/a	n/a	n/a	-
Hearing Aid Compatible	-	Yes M3, T4 (very tele-coil compatible)	Yes M4, T4 (very tele-coil compatible)	Yes M4, T4 (very tele-coil compatible)	-
Multiple Languages	n/a	n/a	n/a	n/a	Yes
TTY/TDD (Digital)	-	Yes	-	Yes	Yes
Alerts
Extra Display	-	-	-	-	Yes
Ringer Profiles	Yes	-	-	-	Yes
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Mobile Hotspot	n/a	n/a	n/a	n/a	-
USB	Yes Micro-USB	Yes	Yes	Yes Micro-USB	-
Wi-Fi	Yes 802.11 b,g	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)	Yes 4 (802.11 b,g,n)	-
Contacts
Picture ID	n/a	n/a	n/a	n/a	Yes
Ringer ID	n/a	n/a	n/a	n/a	-
Voice Dialing	n/a	n/a	n/a	n/a	-
Customization
Custom Graphics	n/a	n/a	n/a	n/a	Yes
Custom Ringtones	n/a	n/a	n/a	n/a	Yes
Real-Music Ringers	n/a	n/a	n/a	n/a	Yes
Data & Network
Data Tethering	n/a	n/a	n/a	n/a	-
WAP / Web Browser	n/a	n/a	n/a	n/a	Yes
Input
Predictive Text Entry	n/a	n/a	n/a	n/a	Yes
Side Keys	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	n/a	n/a	Yes
EMS / Picture Messaging	n/a	n/a	n/a	n/a	Yes
Instant Messaging	n/a	n/a	n/a	n/a	Yes *
MMS	n/a	n/a	n/a	n/a	Yes
Text Messaging Templates	n/a	n/a	n/a	n/a	Yes
Music
FM Radio	Yes	-	Yes	-	Yes
FM Transmitter	n/a	n/a	n/a	n/a	-
Headphone Jack (3.5mm)	Yes	Yes	Yes	Yes	-
Music Player	n/a	n/a	n/a	n/a	-
Stereo Speakers	Yes	-	-	-	-
Photo & Video
DLNA	-	-	-	Yes	-
TV Output	Yes	-	-	Yes	-
Video Calling	n/a	n/a	n/a	n/a	-
Productivity
Alarm	n/a	n/a	n/a	n/a	Yes
Calculator	n/a	n/a	n/a	n/a	Yes
Calendar	n/a	n/a	n/a	n/a	Yes
To-Do List	n/a	n/a	n/a	n/a	Yes
Voice Memo	n/a	n/a	n/a	n/a	Yes
Software
Games	n/a	n/a	n/a	n/a	Yes
Java (J2ME)	n/a	n/a	n/a	n/a	Yes
Voice
Headset Jack (2.5 mm)	n/a	n/a	n/a	n/a	Yes
Push-To-Talk	Yes *	-	-	-	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Nokia N78	ZTE Prelude / Avail 2	HTC Merge	Samsung Droid Charge	Nokia 2660
	X >	< X >	< X >	< X >	< X

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


Phone	Nokia N78	ZTE Prelude / Avail 2	HTC Merge	Samsung Droid Charge	Nokia 2660