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Specifications
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Phone	BlackBerry 7750	Siemens SL55	Samsung SCH-A570	Huawei W1	Nokia E75
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	?	4" diag. 5 : 3	2.4" diag. 4 : 3
Display Resolution & Type	240 x 240 pixels LCD (Color)	101 x 80 pixels LCD (STN)	128 x 160 pixels LCD (STN)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	?
Battery	?	500 mAh	?	1,950 mAh	1,000 mAh
Processor	?	?	?	1.2 GHz Qualcomm Snapdragon 400 MSM8230	369 MHz ARM 11
RAM	?	?	?	512 MB	?
Storage	? raw hardware	? raw hardware	? raw hardware	4 GB	? raw hardware
Main Camera	-	-	-	5 megapixel	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	-	-	720p HD	VGA (640 x 480)
Front Camera	-	-	-	Yes	-
Weight	5.01 oz (142g)	2.79 oz (79g)	3.6 oz (102g)	4.41 oz (125g)	4.9 oz (139g)
Dimensions	4.76" x 3.03" x 0.71" (121 x 77 x 18 mm)	3.21" x 1.75" x 0.86" (82 x 44 x 21.8 mm)	3.3" x 1.8" x 0.9" (84 x 46 x 22.9 mm)	4.84" x 2.5" x 0.41" (123 x 64 x 10.4 mm)	4.4" x 1.97" x 0.57" (112 x 50 x 14.4 mm)
Form Factor	Slab	Slide	Clamshell	Slab	Slab
Platform / OS	BlackBerry OS	(proprietary)	(proprietary)	Windows	S60 (Symbian)
Network Bands	CDMA: 850, 1900	GSM: 900, 1800, 1900	CDMA: 850, 1900	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 *
Data Technology	1xRTT	GPRS	1xRTT	HSPA+ 21	HSDPA 3.6
Features
GPS / Location	n/a	-	Yes	n/a	n/a
Accessibility
Adjustable Text Size	n/a	-	-	n/a	n/a
Hearing Aid Compatible	-	-	-	Yes M3 (mostly compatible)	-
Multiple Languages	n/a	Yes	Yes	n/a	n/a
TTY/TDD (Digital)	Yes	-	Yes	-	-
Alerts
Extra Display	-	-	Yes	-	-
Ringer Profiles	Yes	Yes	-	-	Yes
Connectivity
Bluetooth	-	-	-	Yes	Yes
Infrared (IR)	-	Yes	-	-	-
USB	Yes	-	-	Yes Micro-USB	Yes Micro-USB
Wi-Fi	-	-	-	Yes 4 (802.11 b,g,n)	Yes 802.11 b,g
Contacts
Picture ID	n/a	Yes	-	n/a	n/a
Ringer ID	n/a	Yes	-	n/a	n/a
Voice Dialing	n/a	Yes	Yes	n/a	n/a
Customization
Custom Graphics	n/a	Yes	Yes	n/a	n/a
Custom Ringtones	n/a	Yes	Yes	n/a	n/a
Real-Music Ringers	n/a	-	-	n/a	n/a
Data & Network
Data Tethering	n/a	Yes	-	n/a	n/a
WAP / Web Browser	n/a	Yes	Yes	n/a	n/a
Input
Predictive Text Entry	n/a	Yes	Yes	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	-	-	-	Yes
Touch Screen	-	-	-	Yes Capacitive	-
Memory
Memory Card Slot	-	-	-	Yes	Yes
Messaging
Email Client	n/a	Yes	-	n/a	n/a
EMS / Picture Messaging	n/a	Yes	Yes	n/a	n/a
Instant Messaging	n/a	-	-	n/a	n/a
MMS	n/a	Yes	-	n/a	n/a
Text Messaging Templates	n/a	Yes	Yes	n/a	n/a
Music
FM Radio	-	-	-	-	Yes
Headphone Jack (3.5mm)	-	-	-	Yes	Yes
Music Player	n/a	-	-	n/a	n/a
Photo & Video
Video Calling	n/a	-	-	n/a	n/a
Productivity
Alarm	n/a	Yes	Yes	n/a	n/a
Calculator	n/a	Yes	Yes	n/a	n/a
Calendar	n/a	Yes	Yes	n/a	n/a
To-Do List	n/a	Yes	Yes	n/a	n/a
Voice Memo	n/a	Yes	Yes	n/a	n/a
Software
BREW	n/a	-	Yes	n/a	n/a
Games	n/a	Yes	Yes	n/a	n/a
Java (J2ME)	n/a	Yes	-	n/a	n/a
Voice
Headset Jack (2.5 mm)	n/a	-	Yes	n/a	n/a
Push-To-Talk	-	-	-	-	Yes *
Speaker Phone	-	Yes	-	Yes	Yes
	* Some versions only
	BlackBerry 7750	Siemens SL55	Samsung SCH-A570	Huawei W1	Nokia E75
	X >	< X >	< X >	< X >	< X

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


Phone	BlackBerry 7750	Siemens SL55	Samsung SCH-A570	Huawei W1	Nokia E75