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Phone	Siemens C56	Samsung Galaxy S II / SGH-i777	ZTE Prelude / Avail 2	Samsung SPH-i550	Palm Treo 650 (CDMA)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Not yet released	Released
Display Size	?	4.3" diag. 5 : 3	3.5" diag. 5 : 3	?	?
Display Resolution & Type	101 x 64 pixels	480 x 800 pixels (~217 ppi) AMOLED	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)
Display Refresh	?	60 Hz	60 Hz	?	?
Battery	700 mAh	1,650 mAh	1,500 mAh	?	?
Processor	?	1.2 GHz Samsung Exynos dual-core	1 GHz Qualcomm Snapdragon MSM7225A	200 MHz Motorola MX-1	312 MHz Intel XScale PXA270
RAM	?	?	512 MB	?	?
Storage	? raw hardware	16 GB	4 GB	? raw hardware	? raw hardware
Main Camera	-	8 megapixel	2 megapixel	1 megapixel	Yes
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	1080p HD	VGA (640 x 480)	?	QVGA (320 x 240)
Front Camera	-	2 megapixel	-	-	-
Weight	3 oz (85g)	4.3 oz (122g)	4.4 oz (125g)	?	6.3 oz (179g)
Dimensions	3.98" x 1.73" x 0.83" (101 x 44 x 21.1 mm)	4.96" x 2.6" x 0.35" (126 x 66 x 8.9 mm)	4.6" x 2.44" x 0.45" (117 x 62 x 11.4 mm)	3.46" x 2.34" x 1.1" (88 x 59 x 27.9 mm)	4.4" x 2.3" x 0.9" (112 x 58 x 22.9 mm)
Form Factor	Slab	Slab	Slab	Clamshell	Slab
Platform / OS	(proprietary)	Android	Android	Palm OS	Palm OS
Network Bands	GSM: 850, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	WCDMA: 2, 5 GSM: 850, 1900	CDMA: 850, 1900 AMPS: 850	CDMA: 850, 1900
Data Technology	GPRS	HSPA+ 21	HSPA 7.2	1xRTT	1xRTT
Features
GPS / Location	Yes	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 (mostly compatible)	Yes M3, T4 (very tele-coil compatible)	-	-
Multiple Languages	Yes	n/a	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	-
Alerts
Extra Display	-	-	-	Yes	-
Ringer Profiles	Yes	-	-	-	-
Connectivity
Bluetooth	-	Yes	Yes	-	Yes
Infrared (IR)	-	-	-	Yes	Yes
Mobile Hotspot	-	n/a	n/a	n/a	n/a
NFC	-	Yes	-	-	-
USB	Yes	Yes Micro-USB	Yes	-	-
Wi-Fi	-	Yes 4 (802.11 a,b,g,n)	Yes 4 (802.11 b,g,n)	-	-
Contacts
Picture ID	-	n/a	n/a	n/a	n/a
Ringer ID	Yes	n/a	n/a	n/a	n/a
Voice Dialing	Yes	n/a	n/a	n/a	n/a
Customization
Changeable Body Plates	Yes	-	-	-	-
Custom Graphics	Yes	n/a	n/a	n/a	n/a
Custom Ringtones	Yes	n/a	n/a	n/a	n/a
Real-Music Ringers	-	n/a	n/a	n/a	n/a
Data & Network
Data Tethering	Yes	n/a	n/a	n/a	n/a
WAP / Web Browser	Yes	n/a	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	n/a	n/a
Side Keys	-	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	-	-	Yes
Touch Screen	-	Yes Capacitive	Yes Capacitive	Yes	Yes
Memory
Memory Card Slot	-	Yes	Yes	Yes	Yes
Messaging
Email Client	-	n/a	n/a	n/a	n/a
EMS / Picture Messaging	Yes	n/a	n/a	n/a	n/a
Instant Messaging	-	n/a	n/a	n/a	n/a
MMS	-	n/a	n/a	n/a	n/a
Text Messaging Templates	Yes	n/a	n/a	n/a	n/a
Music
Headphone Jack (3.5mm)	-	Yes	Yes	-	-
Music Player	-	n/a	n/a	n/a	n/a
Photo & Video
DLNA	-	Yes	-	-	-
TV Output	-	Yes	-	-	-
Productivity
Alarm	Yes	n/a	n/a	n/a	n/a
Calculator	Yes	n/a	n/a	n/a	n/a
Calendar	Yes	n/a	n/a	n/a	n/a
To-Do List	-	n/a	n/a	n/a	n/a
Voice Memo	-	n/a	n/a	n/a	n/a
Software
Games	Yes	n/a	n/a	n/a	n/a
Java (J2ME)	Yes	n/a	n/a	n/a	n/a
Voice
Headset Jack (2.5 mm)	-	n/a	n/a	n/a	n/a
Speaker Phone	Yes	Yes	Yes	-	Yes
	Siemens C56	Samsung Galaxy S II / SGH-i777	ZTE Prelude / Avail 2	Samsung SPH-i550	Palm Treo 650 (CDMA)
	X >	< X >	< X >	< X >	< X

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


Phone	Siemens C56	Samsung Galaxy S II / SGH-i777	ZTE Prelude / Avail 2	Samsung SPH-i550	Palm Treo 650 (CDMA)