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Phone	Samsung Stratosphere / Galaxy Metrix 4G	Motorola Charm	Nokia N81	Samsung SPH-i550	Motorola C290
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Not yet released	Released
Display Size	4" diag. 5 : 3	2.8" diag. 4 : 3	2.4" diag. 4 : 3	?	?
Display Resolution & Type	480 x 800 pixels (~233 ppi) AMOLED	320 x 240 pixels (~143 ppi) LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)	128 x 160 pixels LCD (STN)
Display Refresh	60 Hz	60 Hz	?	?	?
Battery	?	1,170 mAh	1,050 mAh	?	1,020 mAh
Processor	1 GHz Samsung Cortex A8 Hummingbird	720 MHz TI OMAP3410	369 MHz ARM 11	200 MHz Motorola MX-1	?
RAM	?	?	?	?	?
Storage	? raw hardware	? raw hardware	8 GB *	? raw hardware	? raw hardware
Main Camera	5 megapixel	3 megapixel	2 megapixel	1 megapixel	-
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	WVGA / 480p	?	VGA (640 x 480)	?	-
Front Camera	1 megapixel	-	-	-	-
Weight	5.8 oz (164g)	3.88 oz (110g)	4.94 oz (140g)	?	3.53 oz (100g)
Dimensions	4.96" x 2.54" x 0.55" (126 x 65 x 14 mm)	3.87" x 2.65" x 0.45" (98 x 67 x 11.4 mm)	4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm)	3.46" x 2.34" x 1.1" (88 x 59 x 27.9 mm)	3.43" x 1.91" x 0.93" (87 x 49 x 23.6 mm)
Form Factor	Slide	Slab	Slide	Clamshell	Clamshell
Platform / OS	Android	Android	S60 (Symbian)	Palm OS	(proprietary)
Network Bands	4G LTE: 13 CDMA: 850, 1900 *	WCDMA: 4 GSM: 850, 900, 1800, 1900 *	WCDMA: 1 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850	CDMA: 850, 1900 AMPS: 850
Data Technology	LTE (Cat 3)	HSDPA 3.6	EDGE	1xRTT	1xRTT
Features
GPS / Location	n/a	n/a	n/a	n/a	Yes
Accessibility
Hearing Aid Compatible	Yes M4 (very compatible)	-	-	-	Yes M3 (mostly compatible)
Multiple Languages	n/a	n/a	n/a	n/a	Yes
TTY/TDD (Digital)	Yes	Yes	-	Yes	Yes
Alerts
Extra Display	-	-	-	Yes	-
Ringer Profiles	-	-	Yes	-	-
Connectivity
Bluetooth	Yes	Yes	Yes	-	-
Infrared (IR)	-	-	-	Yes	-
Mobile Hotspot	n/a	n/a	n/a	n/a	-
USB	Yes	Yes Micro-USB	Yes Micro-USB	-	Yes Mini-USB
Wi-Fi	Yes 4 (802.11 a,b,g,n)	Yes 4 (802.11 b,g,n)	Yes 802.11 b,g	-	-
Contacts
Picture ID	n/a	n/a	n/a	n/a	Yes
Ringer ID	n/a	n/a	n/a	n/a	Yes
Voice Dialing	n/a	n/a	n/a	n/a	-
Customization
Custom Graphics	n/a	n/a	n/a	n/a	-
Custom Ringtones	n/a	n/a	n/a	n/a	-
Real-Music Ringers	n/a	n/a	n/a	n/a	Yes
Data & Network
Data Tethering	n/a	n/a	n/a	n/a	-
External Antenna Jack	n/a	n/a	n/a	n/a	Yes
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	Yes
Text Keyboard, Hardware	Yes	Yes	-	-	-
Touch Screen	Yes Capacitive	Yes Capacitive	-	Yes	-
Memory
Memory Card Slot	Yes	Yes	Yes *	Yes	-
Messaging
Email Client	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	n/a	n/a	n/a	n/a	Yes
Music
FM Radio	-	-	Yes	-	-
Headphone Jack (3.5mm)	Yes	Yes	Yes	-	-
Music Player	n/a	n/a	n/a	n/a	-
Stereo Speakers	-	-	Yes	-	-
Photo & Video
DLNA	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	-
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
	* Some versions only
	Samsung Stratosphere / Galaxy Metrix 4G	Motorola Charm	Nokia N81	Samsung SPH-i550	Motorola C290
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung Stratosphere / Galaxy Metrix 4G	Motorola Charm	Nokia N81	Samsung SPH-i550	Motorola C290