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Phone	Siemens M55	Ericsson R278d	ZTE Prelude / Avail 2	Samsung SGH-T629	Samsung Transform
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	3.5" diag. 5 : 3	?	3.5" diag. 5 : 3
Display Resolution & Type	101 x 80 pixels LCD (Color)	101 x 40 pixels	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)	176 x 220 pixels LCD (TFT/TFD)	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	60 Hz
Battery	700 mAh	?	1,500 mAh	880 mAh	1,500 mAh
Processor	?	?	1 GHz Qualcomm Snapdragon MSM7225A	?	800 MHz Samsung S3C6410, Qualcomm QSC6085
RAM	?	?	512 MB	?	?
Storage	? raw hardware	? raw hardware	4 GB	? raw hardware	? raw hardware
Main Camera	-	-	2 megapixel	1 megapixel	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	-	VGA (640 x 480)	QCIF (176 x 144)	QVGA (320 x 240)
Front Camera	-	-	-	-	Yes
Weight	2.93 oz (83g)	9.28 oz (263g)	4.4 oz (125g)	3.2 oz (91g)	5.37 oz (152g)
Dimensions	3.98" x 1.81" x 0.83" (101 x 46 x 21.1 mm)	5.1" x 2" x 1" (130 x 51 x 25.4 mm)	4.6" x 2.44" x 0.45" (117 x 62 x 11.4 mm)	3.9" x 2.01" x 0.55" (99 x 51 x 14 mm)	4.61" x 2.42" x 0.61" (117 x 61 x 15.5 mm)
Form Factor	Slab	Slab	Slab	Slide	Slide
Platform / OS	(proprietary)	(proprietary)	Android	(proprietary)	Android
Network Bands	GSM: 900, 1800, 1900	TDMA: 850, 1900 AMPS: 850	WCDMA: 2, 5 GSM: 850, 1900	GSM: 850, 900, 1800, 1900	CDMA: 850, 1900
Data Technology	GPRS	-	HSPA 7.2	EDGE	EVDO rA
Features
GPS / Location	Yes	-	n/a	-	n/a
Accessibility
Adjustable Text Size	-	-	n/a	-	n/a
Hearing Aid Compatible	-	-	Yes M3, T4 (very tele-coil compatible)	-	Yes M4, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	Yes	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	-	Yes	Yes	Yes
Alerts
Ringer Profiles	-	Yes	-	-	-
Connectivity
Bluetooth	-	-	Yes	Yes	Yes
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
Ringer ID	-	-	n/a	Yes	n/a
Voice Dialing	Yes	-	n/a	Yes	n/a
Customization
Custom Graphics	Yes	-	n/a	Yes	n/a
Custom Ringtones	Yes	Yes	n/a	Yes	n/a
Real-Music Ringers	-	-	n/a	Yes	n/a
Data & Network
Data Tethering	Yes	Yes	n/a	Yes	n/a
WAP / Web Browser	Yes	Yes	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	Yes	n/a	Yes	n/a
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	Yes	-	n/a	-	n/a
EMS / Picture Messaging	Yes	-	n/a	Yes	n/a
Instant Messaging	-	-	n/a	Yes	n/a
MMS	Yes	-	n/a	Yes	n/a
Text Messaging Templates	-	-	n/a	Yes	n/a
Music
Headphone Jack (3.5mm)	-	-	Yes	-	Yes
Music Player	-	-	n/a	Yes	n/a
Productivity
Alarm	-	Yes	n/a	Yes	n/a
Calculator	-	-	n/a	Yes	n/a
Calendar	Yes	-	n/a	Yes	n/a
To-Do List	-	-	n/a	Yes	n/a
Voice Memo	-	-	n/a	Yes	n/a
Software
Games	Yes	-	n/a	Yes	n/a
Java (J2ME)	Yes	-	n/a	Yes	n/a
Voice
Speaker Phone	Yes	-	Yes	Yes	Yes
	Siemens M55	Ericsson R278d	ZTE Prelude / Avail 2	Samsung SGH-T629	Samsung Transform
	X >	< X >	< X >	< X >	< X

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


Phone	Siemens M55	Ericsson R278d	ZTE Prelude / Avail 2	Samsung SGH-T629	Samsung Transform