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Phone	Sony Ericsson Z520 / Z525	Samsung MM-A900 / SPH-A900 / Ace	Sony Ericsson Xperia X10 mini pro (2010)	Motorola Backflip	HTC Desire 520
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	2.6" diag. 4 : 3	3.1" diag. 5 : 3	4.5" diag. 16 : 9
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	240 x 320 pixels (~154 ppi) LCD (TFT/TFD)	320 x 480 pixels (~186 ppi) LCD (TFT/TFD)	480 x 854 pixels (~218 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	60 Hz	60 Hz
Battery	?	?	930 mAh	1,400 mAh	2,000 mAh
Processor	?	?	600 MHz Qualcomm S1 MSM7227	528 MHz Qualcomm MSM7201a	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)
RAM	?	?	?	?	1 GB
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	8 GB
Main Camera	Yes	1 megapixel	5 megapixel	5 megapixel	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	?	VGA (640 x 480)	CIF (352 x 288)	720p HD
Front Camera	-	-	-	-	2 megapixel
Weight	3.46 oz (98g)	3.9 oz (111g)	4.2 oz (119g)	4.7 oz (133g)	4.9 oz (139g)
Dimensions	3.27" x 1.81" x 0.94" (83 x 46 x 23.9 mm)	3.86" x 2.01" x 0.57" (98 x 51 x 14.5 mm)	3.5" x 2" x 0.7" (89 x 51 x 17.8 mm)	4.25" x 2.09" x 0.6" (108 x 53 x 15.3 mm)	5.5" x 2.71" x 0.36" (140 x 69 x 9 mm)
Form Factor	Clamshell	Clamshell	Slide	Clamshell	Slab
Platform / OS	(proprietary)	(proprietary)	Android	Android	Android
Network Bands	GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	4G LTE: 2, 4, 5, 17 WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900
Data Technology	GPRS	EVDO r0	HSPA 7.2	HSPA 7.2	LTE (Cat 3)
Features
GPS / Location	-	Yes	n/a	n/a	n/a
Accessibility
Adjustable Text Size	-	-	n/a	n/a	n/a
Hearing Aid Compatible	-	-	-	Yes M3 (mostly compatible)	Yes M4, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	Yes	-	-	Yes
Alerts
Extra Display	Yes	Yes	-	-	-
Ringer Profiles	Yes	-	-	-	-
Connectivity
Bluetooth	Yes	Yes	Yes	Yes	Yes
Infrared (IR)	Yes	-	-	-	-
Mobile Hotspot	-	-	n/a	n/a	n/a
USB	Yes	Yes	Yes Micro-USB	Yes Micro-USB	Yes Micro-USB
Wi-Fi	-	-	Yes	Yes 802.11 b,g	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	Yes	Yes	n/a	n/a	n/a
Ringer ID	Yes	Yes	n/a	n/a	n/a
Voice Dialing	Yes	Yes	n/a	n/a	n/a
Customization
Changeable Body Plates	Yes	-	-	-	-
Custom Graphics	Yes	Yes	n/a	n/a	n/a
Custom Ringtones	Yes	Yes	n/a	n/a	n/a
Real-Music Ringers	Yes	-	n/a	n/a	n/a
Data & Network
Data Tethering	Yes	Yes	n/a	n/a	n/a
WAP / Web Browser	Yes	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	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
Messaging
Email Client	Yes	-	n/a	n/a	n/a
EMS / Picture Messaging	Yes	-	n/a	n/a	n/a
Instant Messaging	-	-	n/a	n/a	n/a
MMS	Yes	-	n/a	n/a	n/a
Text Messaging Templates	Yes	Yes	n/a	n/a	n/a
Music
FM Radio	-	-	Yes	-	Yes
Headphone Jack (3.5mm)	-	-	Yes	Yes	Yes
Music Player	-	Yes	n/a	n/a	n/a
Photo & Video
DLNA	-	-	-	-	Yes
Productivity
Alarm	Yes	Yes	n/a	n/a	n/a
Calculator	Yes	Yes	n/a	n/a	n/a
Calendar	Yes	Yes	n/a	n/a	n/a
To-Do List	Yes	Yes	n/a	n/a	n/a
Voice Memo	Yes	Yes	n/a	n/a	n/a
Software
Games	Yes	Yes	n/a	n/a	n/a
Java (J2ME)	Yes	Yes	n/a	n/a	n/a
Voice
Headset Jack (2.5 mm)	-	Yes	n/a	n/a	n/a
Push-To-Talk	Yes *	-	-	-	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Sony Ericsson Z520 / Z525	Samsung MM-A900 / SPH-A900 / Ace	Sony Ericsson Xperia X10 mini pro (2010)	Motorola Backflip	HTC Desire 520
	X >	< X >	< X >	< X >	< X

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


Phone	Sony Ericsson Z520 / Z525	Samsung MM-A900 / SPH-A900 / Ace	Sony Ericsson Xperia X10 mini pro (2010)	Motorola Backflip	HTC Desire 520