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Phone	BlackBerry 7750	Nokia 1661	Samsung Galaxy Attain 4G	Ericsson R520	Huawei Ascend II
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	1.8" diag. 4 : 3	3.5" diag. 5 : 3	?	3.5" diag. 5 : 3
Display Resolution & Type	240 x 240 pixels LCD (Color)	128 x 160 pixels (~114 ppi) LCD (TFT/TFD)	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)	?	320 x 480 pixels (~165 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	?	60 Hz
Battery	?	860 mAh	1,650 mAh	?	1,400 mAh
Processor	?	?	?	?	600 MHz Qualcomm S1 MSM7627
RAM	?	?	512 MB	?	?
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	-	-	3 megapixel	-	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	-	WVGA / 480p	-	VGA (640 x 480)
Front Camera	-	-	1 megapixel	-	-
Weight	5.01 oz (142g)	2.9 oz (82g)	4.2 oz (119g)	4.23 oz (120g)	4.1 oz (116g)
Dimensions	4.76" x 3.03" x 0.71" (121 x 77 x 18 mm)	4.25" x 1.8" x 0.53" (108 x 46 x 13.5 mm)	4.57" x 2.38" x 0.46" (116 x 60 x 11.7 mm)	5.12" x 1.97" x 0.63" (130 x 50 x 16 mm)	4.6" x 2.4" x 0.5" (117 x 61 x 12.7 mm)
Form Factor	Slab	Slab	Slab	Slab	Slab
Platform / OS	BlackBerry OS	(proprietary)	Android	(proprietary)	Android
Network Bands	CDMA: 850, 1900	GSM: 850, 1900	4G LTE: 2, 4 CDMA: 850, 1700, 1900	GSM: 900, 1800, 1900	CDMA: 850, 1700, 1900
Data Technology	1xRTT	-	LTE (Cat 3)	GPRS	EVDO rA
Features
Flashlight	-	Yes	-	-	-
GPS / Location	n/a	-	n/a	-	n/a
Accessibility
Hearing Aid Compatible	-	-	Yes	-	Yes
Multiple Languages	n/a	-	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	-	Yes	-	Yes
Alerts
Ringer Profiles	Yes	Yes	-	Yes	-
Connectivity
Bluetooth	-	-	Yes	Yes	Yes
Infrared (IR)	-	-	-	Yes	-
USB	Yes	-	Yes Micro-USB	-	Yes Micro-USB
Wi-Fi	-	-	Yes	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	-	n/a	-	n/a
Ringer ID	n/a	-	n/a	-	n/a
Voice Dialing	n/a	-	n/a	Yes	n/a
Customization
Custom Graphics	n/a	-	n/a	-	n/a
Custom Ringtones	n/a	-	n/a	Yes	n/a
Real-Music Ringers	n/a	-	n/a	-	n/a
Data & Network
Data Tethering	n/a	-	n/a	Yes	n/a
WAP / Web Browser	n/a	-	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	-	Yes
Memory
Memory Card Slot	-	-	Yes	-	Yes
Messaging
Email Client	n/a	-	n/a	-	n/a
Instant Messaging	n/a	-	n/a	-	n/a
MMS	n/a	-	n/a	-	n/a
Text Messaging Templates	n/a	-	n/a	Yes	n/a
Music
FM Radio	-	Yes	-	-	-
Headphone Jack (3.5mm)	-	-	Yes	-	Yes
Music Player	n/a	-	n/a	-	n/a
Photo & Video
DLNA	-	-	Yes	-	-
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	-	n/a
Voice Memo	n/a	Yes	n/a	Yes	n/a
Software
Games	n/a	Yes	n/a	Yes	n/a
Java (J2ME)	n/a	-	n/a	-	n/a
Voice
Headset Jack (2.5 mm)	n/a	Yes	n/a	-	n/a
Speaker Phone	-	Yes	Yes	Yes	Yes
	BlackBerry 7750	Nokia 1661	Samsung Galaxy Attain 4G	Ericsson R520	Huawei Ascend II
	X >	< X >	< X >	< X >	< X

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


Phone	BlackBerry 7750	Nokia 1661	Samsung Galaxy Attain 4G	Ericsson R520	Huawei Ascend II