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Phone	Samsung Stratosphere / Galaxy Metrix 4G	Samsung SCH-A990	Motorola Droid X2	Motorola Q	Microsoft Lumia 550
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4" diag. 5 : 3	?	4.3" diag. 16 : 9	?	4.7" diag. 16 : 9
Display Resolution & Type	480 x 800 pixels (~233 ppi) AMOLED	240 x 320 pixels LCD (TFT/TFD)	540 x 960 pixels (~256 ppi) LCD (TFT/TFD)	320 x 240 pixels LCD (TFT/TFD)	720 x 1280 pixels (~312 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	60 Hz	?	?
Battery	?	1,000 mAh	1,540 mAh	1,130 mAh	2,100 mAh
Processor	1 GHz Samsung Cortex A8 Hummingbird	?	1 GHz dual-core Nvidia Tegra 2 AP20H	?	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)
RAM	?	?	?	?	1 GB
Storage	? raw hardware	? raw hardware	8 GB	? raw hardware	8 GB
Main Camera	5 megapixel	3 megapixel	8 megapixel	1 megapixel	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	WVGA / 480p	?	720p HD	?	720p HD
Front Camera	1 megapixel	-	-	-	2 megapixel
Weight	5.8 oz (164g)	4.4 oz (125g)	5.47 oz (155g)	4.06 oz (115g)	5.01 oz (142g)
Dimensions	4.96" x 2.54" x 0.55" (126 x 65 x 14 mm)	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)	5" x 2.58" x 0.39" (127 x 66 x 9.9 mm)	4.57" x 2.52" x 0.47" (116 x 64 x 11.9 mm)	5.36" x 2.67" x 0.39" (136 x 68 x 9.9 mm)
Form Factor	Slide	Clamshell	Slab	Slab	Slab
Platform / OS	Android	(proprietary)	Android	Windows Mobile Standard	Windows
Network Bands	4G LTE: 13 CDMA: 850, 1900 *	CDMA: 850, 1900	CDMA: 850, 1900	CDMA: 850, 1900	4G LTE: 2, 4, 5, 7, 12, 17 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	LTE (Cat 3)	EVDO r0	EVDO rA	EVDO r0	LTE (Cat 4)
Features
Flashlight	-	Yes	-	-	Yes
GPS / Location	n/a	Yes	n/a	n/a	n/a
Accessibility
Adjustable Text Size	n/a	-	n/a	n/a	n/a
Hearing Aid Compatible	Yes M4 (very compatible)	Yes M3 (mostly compatible)	Yes M4, T3 (mostly tele-coil compatible)	Yes M3 (mostly compatible)	Yes M3, T4 (very tele-coil compatible)
Multiple Languages	n/a	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	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	n/a
USB	Yes	Yes	Yes	Yes Mini-USB	Yes Micro-USB
Wi-Fi	Yes 4 (802.11 a,b,g,n)	-	Yes 4 (802.11 b,g,n)	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	Yes	n/a	n/a	n/a
Ringer ID	n/a	Yes	n/a	n/a	n/a
Voice Dialing	n/a	Yes	n/a	n/a	n/a
Customization
Custom Graphics	n/a	Yes	n/a	n/a	n/a
Custom Ringtones	n/a	Yes	n/a	n/a	n/a
Real-Music Ringers	n/a	Yes	n/a	n/a	n/a
Data & Network
Data Tethering	n/a	Yes	n/a	n/a	n/a
External Antenna Jack	n/a	-	n/a	n/a	n/a
WAP / Web Browser	n/a	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	n/a	Yes	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	-	-	Yes	-
Touch Screen	Yes Capacitive	-	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes	Yes	Yes	Yes
Messaging
Email Client	n/a	-	n/a	n/a	n/a
EMS / Picture Messaging	n/a	Yes	n/a	n/a	n/a
Instant Messaging	n/a	-	n/a	n/a	n/a
MMS	n/a	Yes	n/a	n/a	n/a
Text Messaging Templates	n/a	Yes	n/a	n/a	n/a
Music
FM Radio	-	-	Yes	-	Yes
Headphone Jack (3.5mm)	Yes	-	Yes	-	Yes
Music Player	n/a	Yes	n/a	n/a	n/a
Stereo Speakers	-	Yes	-	-	-
Photo & Video
DLNA	Yes	-	Yes	-	-
TV Output	-	Yes	Yes	-	-
Productivity
Alarm	n/a	Yes	n/a	n/a	n/a
Calculator	n/a	Yes	n/a	n/a	n/a
Calendar	n/a	Yes	n/a	n/a	n/a
To-Do List	n/a	-	n/a	n/a	n/a
Voice Memo	n/a	Yes	n/a	n/a	n/a
Software
BREW	n/a	Yes	n/a	n/a	n/a
Games	n/a	Yes	n/a	n/a	n/a
Voice
HD Voice	-	-	-	-	Yes
Headset Jack (2.5 mm)	n/a	-	n/a	n/a	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	Samsung Stratosphere / Galaxy Metrix 4G	Samsung SCH-A990	Motorola Droid X2	Motorola Q	Microsoft Lumia 550
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung Stratosphere / Galaxy Metrix 4G	Samsung SCH-A990	Motorola Droid X2	Motorola Q	Microsoft Lumia 550