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Specifications
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Phone	Samsung DoubleTime	Samsung SCH-A990	Nokia N81	Sony Ericsson Z750	LG Optimus G (CDMA)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	3.2" diag. 5 : 3	?	2.4" diag. 4 : 3	2.2" diag. 4 : 3	4.7" diag. 5 : 3
Display Resolution & Type	320 x 480 pixels (~180 ppi) LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	240 x 320 pixels (~182 ppi) LCD (TFT/TFD)	768 x 1280 pixels (~318 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	?	?	60 Hz
Battery	1,200 mAh	1,000 mAh	1,050 mAh	950 mAh	2,100 mAh
Processor	600 MHz Qualcomm	?	369 MHz ARM 11	?	1.5 GHz Qualcomm Snapdragon S4 Pro
RAM	?	?	?	?	2 GB
Storage	? raw hardware	? raw hardware	8 GB *	? raw hardware	32 GB
Main Camera	3 megapixel	3 megapixel	2 megapixel	2 megapixel	13 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QVGA (320 x 240)	?	VGA (640 x 480)	?	1080p HD
Front Camera	-	-	-	-	1 megapixel
Weight	5.22 oz (148g)	4.4 oz (125g)	4.94 oz (140g)	3.88 oz (110g)	5.11 oz (145g)
Dimensions	4.45" x 2.44" x 0.59" (113 x 62 x 15 mm)	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)	4.02" x 1.97" x 0.7" (102 x 50 x 17.8 mm)	3.83" x 1.93" x 0.79" (97 x 49 x 20.1 mm)	5.19" x 2.71" x 0.33" (132 x 69 x 8.5 mm)
Form Factor	Clamshell	Clamshell	Slide	Clamshell	Slab
Platform / OS	Android	(proprietary)	S60 (Symbian)	(proprietary)	Android
Network Bands	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	WCDMA: 1 GSM: 850, 900, 1800, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	4G LTE: 25 CDMA: 800, 850, 1900
Data Technology	HSPA 7.2	EVDO r0	EDGE	HSDPA 1.8	LTE (Cat 3)
Features
Flashlight	-	Yes	-	-	-
GPS / Location	n/a	Yes	n/a	-	n/a
Accessibility
Adjustable Text Size	n/a	-	n/a	-	n/a
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	Yes M3 (mostly compatible)	-	Yes M3, T3 (mostly tele-coil compatible)	Yes M4 (very compatible)
Multiple Languages	n/a	Yes	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	-	Yes	Yes
Alerts
Extra Display	-	Yes	-	Yes	-
Ringer Profiles	-	-	Yes	-	Yes
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Mobile Hotspot	n/a	-	n/a	-	n/a
NFC	-	-	-	-	Yes
USB	Yes Micro-USB	Yes	Yes Micro-USB	Yes	Yes Micro-USB
Wi-Fi	Yes 4 (802.11 b,g,n)	-	Yes 802.11 b,g	-	Yes 4 (802.11 a,b,g,n)
Contacts
Picture ID	n/a	Yes	n/a	Yes	n/a
Ringer ID	n/a	Yes	n/a	Yes	n/a
Voice Dialing	n/a	Yes	n/a	-	n/a
Customization
Custom Graphics	n/a	Yes	n/a	Yes	n/a
Custom Ringtones	n/a	Yes	n/a	Yes	n/a
Real-Music Ringers	n/a	Yes	n/a	Yes	n/a
Data & Network
Data Tethering	n/a	Yes	n/a	Yes	n/a
External Antenna Jack	n/a	-	n/a	Yes	n/a
WAP / Web Browser	n/a	Yes	n/a	Yes	n/a
Input
Predictive Text Entry	n/a	Yes	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	-	Yes
Text Keyboard, Hardware	Yes	-	-	-	-
Touch Screen	Yes Capacitive	-	-	-	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes	Yes *	Yes	-
Messaging
Email Client	n/a	-	n/a	Yes	n/a
EMS / Picture Messaging	n/a	Yes	n/a	-	n/a
Instant Messaging	n/a	-	n/a	Yes	n/a
MMS	n/a	Yes	n/a	Yes	n/a
Text Messaging Templates	n/a	Yes	n/a	Yes	n/a
Music
FM Radio	-	-	Yes	Yes	-
Headphone Jack (3.5mm)	Yes	-	Yes	-	Yes
Music Player	n/a	Yes	n/a	Yes	n/a
Stereo Speakers	-	Yes	Yes	-	-
Photo & Video
DLNA	-	-	-	-	Yes
Miracast	-	-	-	-	Yes
TV Output	-	Yes	-	-	Yes
Video Calling	n/a	-	n/a	Yes *	n/a
Productivity
Alarm	n/a	Yes	n/a	Yes	n/a
Calculator	n/a	Yes	n/a	Yes	n/a
Calendar	n/a	Yes	n/a	Yes	n/a
To-Do List	n/a	-	n/a	Yes	n/a
Voice Memo	n/a	Yes	n/a	Yes	n/a
Software
BREW	n/a	Yes	n/a	-	n/a
Games	n/a	Yes	n/a	Yes	n/a
Java (J2ME)	n/a	-	n/a	Yes	n/a
Voice
HD Voice	-	-	-	-	Yes
Push-To-Talk	-	-	Yes *	-	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung DoubleTime	Samsung SCH-A990	Nokia N81	Sony Ericsson Z750	LG Optimus G (CDMA)
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung DoubleTime	Samsung SCH-A990	Nokia N81	Sony Ericsson Z750	LG Optimus G (CDMA)