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Phone	Samsung SCH-A990	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Apple iPhone 3GS	Cricket Debut S2 / AT&T Calypso 4	Samsung Nexus S 4G
Current U.S. Carriers	(none)	(none)	(none)	AT&T Cricket	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	3.5" diag. 5 : 3	6.1" diag. 19.5 : 9	4" diag. 5 : 3
Display Resolution & Type	240 x 320 pixels LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)	720 x 1560 pixels (~282 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) AMOLED
Display Refresh	?	?	60 Hz	60 Hz	60 Hz
Battery	1,000 mAh	1,490 mAh	?	3,000 mAh	1,500 mAh
Processor	?	400 MHz Intel XScale	?	2 GHz MediaTek Helio A22 (MT6761WB)	1 GHz Samsung Hummingbird Cortex A8
RAM	?	?	?	3 GB	?
Storage	? raw hardware	? raw hardware	32 GB *	64 GB	16 GB
Main Camera	3 megapixel	Yes	3 megapixel	8 megapixel	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	QCIF (176 x 144)	VGA (640 x 480)	?	WVGA / 480p
Front Camera	-	-	-	5 megapixel	Yes
Weight	4.4 oz (125g)	7.41 oz (210g)	4.76 oz (135g)	5.64 oz (160g)	4.62 oz (131g)
Dimensions	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)	4.92" x 2.83" x 0.75" (125 x 72 x 19.1 mm)	4.55" x 2.44" x 0.48" (116 x 62 x 12.3 mm)	6.11" x 2.87" x 0.34" (155 x 73 x 8.6 mm)	4.88" x 2.48" x 0.44" (124 x 63 x 11.2 mm)
Form Factor	Clamshell	Slide	Slab	Slab	Slab
Platform / OS	(proprietary)	Windows Mobile Professional	iOS	Android	Android
Network Bands	CDMA: 850, 1900	GSM: 850, 900, 1800, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30, 66 WCDMA: 1, 2, 4, 5, 8	4G WiMAX: 41 CDMA: 850, 1900
Data Technology	EVDO r0	GPRS	HSPA 7.2	LTE (Cat 4)	WiMAX
Features
Flashlight	Yes	-	-	Yes	-
GPS / Location	Yes	n/a	n/a	n/a	n/a
Accessibility
Hearing Aid Compatible	Yes M3 (mostly compatible)	-	-	Yes M4, T4 (very tele-coil compatible)	Yes M4 (very compatible)
Multiple Languages	Yes	n/a	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	-	Yes	-	-
Alerts
Extra Display	Yes	-	-	-	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Infrared (IR)	-	Yes	-	-	-
Mobile Hotspot	-	n/a	n/a	n/a	n/a
NFC	-	-	-	-	Yes
USB	Yes	Yes	Yes	Yes USB Type C	Yes Micro-USB
Wi-Fi	-	Yes	Yes 802.11 b,g	Yes 5 (802.11 a,ac,b,g,n)	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	Yes	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
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	Yes	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	Yes
Text Keyboard, Hardware	-	Yes	-	-	-
Touch Screen	-	Yes	Yes Capacitive	Yes Capacitive	Yes Capacitive
Memory
Memory Card Slot	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	Yes	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	Yes
Music Player	Yes	n/a	n/a	n/a	n/a
Stereo Speakers	Yes	-	-	-	-
Photo & Video
TV Output	Yes	-	Yes	-	-
Power
Fast Charging	-	-	-	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	Yes	n/a	n/a	n/a	n/a
Software
BREW	Yes	n/a	n/a	n/a	n/a
Games	Yes	n/a	n/a	n/a	n/a
Java (J2ME)	-	n/a	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
	* Some versions only
	Samsung SCH-A990	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Apple iPhone 3GS	Cricket Debut S2 / AT&T Calypso 4	Samsung Nexus S 4G
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SCH-A990	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Apple iPhone 3GS	Cricket Debut S2 / AT&T Calypso 4	Samsung Nexus S 4G