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Phone	Samsung MM-A900 / SPH-A900 / Ace	HTC Desire 520	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Samsung SGH-E400	BlackBerry Storm2 9550
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Not yet released	Released
Display Size	?	4.5" diag. 16 : 9	?	?	3.3" diag. 4 : 3
Display Resolution & Type	240 x 320 pixels LCD (TFT/TFD)	480 x 854 pixels (~218 ppi) LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	128 x 144 pixels LCD (TFT/TFD)	360 x 480 pixels (~185 ppi) LCD (TFT/TFD)
Display Refresh	?	60 Hz	?	?	?
Battery	?	2,000 mAh	1,490 mAh	700 mAh	1,400 mAh
Processor	?	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)	400 MHz Intel XScale	?	?
RAM	?	1 GB	?	?	?
Storage	? raw hardware	8 GB	? raw hardware	? raw hardware	? raw hardware
Main Camera	1 megapixel	8 megapixel	Yes	-	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	720p HD	QCIF (176 x 144)	-	?
Front Camera	-	2 megapixel	-	-	-
Weight	3.9 oz (111g)	4.9 oz (139g)	7.41 oz (210g)	3.1 oz (88g)	5.64 oz (160g)
Dimensions	3.86" x 2.01" x 0.57" (98 x 51 x 14.5 mm)	5.5" x 2.71" x 0.36" (140 x 69 x 9 mm)	4.92" x 2.83" x 0.75" (125 x 72 x 19.1 mm)	3.46" x 1.65" x 0.89" (88 x 42 x 22.6 mm)	4.43" x 2.45" x 0.55" (113 x 62 x 14 mm)
Form Factor	Clamshell	Slab	Slide	Clamshell	Slab
Platform / OS	(proprietary)	Android	Windows Mobile Professional	(proprietary)	BlackBerry OS
Network Bands	CDMA: 850, 1900	4G LTE: 2, 4, 5, 17 WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	GSM: 850, 900, 1800, 1900	GSM: 900, 1800, 1900	WCDMA: 1 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900
Data Technology	EVDO r0	LTE (Cat 3)	GPRS	GPRS	EVDO rA
Features
GPS / Location	Yes	n/a	n/a	-	n/a
Accessibility
Adjustable Text Size	-	n/a	n/a	-	n/a
Hearing Aid Compatible	-	Yes M4, T3 (mostly tele-coil compatible)	-	-	Yes M3 (mostly compatible)
Multiple Languages	Yes	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	-	-	Yes
Alerts
Extra Display	Yes	-	-	Yes	-
Ringer Profiles	-	-	-	-	Yes
Connectivity
Bluetooth	Yes	Yes	Yes	-	Yes
Infrared (IR)	-	-	Yes	Yes	-
Mobile Hotspot	-	n/a	n/a	-	n/a
USB	Yes	Yes Micro-USB	Yes	-	Yes
Wi-Fi	-	Yes 4 (802.11 b,g,n)	Yes	-	Yes 802.11 b,g
Contacts
Picture ID	Yes	n/a	n/a	-	n/a
Ringer ID	Yes	n/a	n/a	-	n/a
Voice Dialing	Yes	n/a	n/a	-	n/a
Customization
Custom Graphics	Yes	n/a	n/a	Yes	n/a
Custom Ringtones	Yes	n/a	n/a	Yes	n/a
Real-Music Ringers	-	n/a	n/a	-	n/a
Data & Network
Data Tethering	Yes	n/a	n/a	Yes	n/a
WAP / Web Browser	Yes	n/a	n/a	Yes	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	Yes	-	-
Touch Screen	-	Yes Capacitive	Yes	-	Yes Capacitive
Memory
Memory Card Slot	-	Yes	Yes	-	Yes
Messaging
Email Client	-	n/a	n/a	-	n/a
EMS / Picture Messaging	-	n/a	n/a	Yes	n/a
Instant Messaging	-	n/a	n/a	-	n/a
MMS	-	n/a	n/a	-	n/a
Text Messaging Templates	Yes	n/a	n/a	Yes	n/a
Music
FM Radio	-	Yes	-	-	-
Headphone Jack (3.5mm)	-	Yes	-	-	Yes
Music Player	Yes	n/a	n/a	-	n/a
Photo & Video
DLNA	-	Yes	-	-	-
Productivity
Alarm	Yes	n/a	n/a	Yes	n/a
Calculator	Yes	n/a	n/a	Yes	n/a
Calendar	Yes	n/a	n/a	Yes	n/a
To-Do List	Yes	n/a	n/a	Yes	n/a
Voice Memo	Yes	n/a	n/a	-	n/a
Software
Games	Yes	n/a	n/a	Yes	n/a
Java (J2ME)	Yes	n/a	n/a	Yes	n/a
Voice
Headset Jack (2.5 mm)	Yes	n/a	n/a	Yes	n/a
Speaker Phone	Yes	Yes	Yes	-	Yes
	* Some versions only
	Samsung MM-A900 / SPH-A900 / Ace	HTC Desire 520	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Samsung SGH-E400	BlackBerry Storm2 9550
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung MM-A900 / SPH-A900 / Ace	HTC Desire 520	Siemens SX66 / MDA III / PDA2K (HTC Blue Angel)	Samsung SGH-E400	BlackBerry Storm2 9550