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Specifications
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Phone	Nokia Lumia 521 / 520	Nokia 2660	Sony Ericsson T61c	LG Optimus F7	Palm Treo 650 (CDMA)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4" diag. 5 : 3	?	?	4.7" diag. 16 : 9	?
Display Resolution & Type	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (STN)	?	720 x 1280 pixels (~312 ppi) LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)
Display Refresh	?	?	?	60 Hz	?
Battery	1,430 mAh	700 mAh	?	2,540 mAh	?
Processor	1 GHz Qualcomm Snapdragon S4 MSM8270	?	?	1.5 GHz Qualcomm Snapdragon S4 Plus MSM8960	312 MHz Intel XScale PXA270
RAM	512 MB	?	?	1 GB	?
Storage	8 GB	? raw hardware	? raw hardware	8 GB	? raw hardware
Main Camera	5 megapixel	-	-	8 megapixel	Yes
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	720p HD	-	-	1080p HD	QVGA (320 x 240)
Front Camera	-	-	-	1 megapixel	-
Weight	4.39 oz (124g)	2.79 oz (79g)	4.4 oz (125g)	4.7 oz (133g)	6.3 oz (179g)
Dimensions	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)	3.43" x 1.76" x 0.81" (87 x 45 x 20.6 mm)	4.8" x 2.13" x 0.92" (122 x 54 x 23.4 mm)	5.16" x 2.71" x 0.38" (131 x 69 x 9.7 mm)	4.4" x 2.3" x 0.9" (112 x 58 x 22.9 mm)
Form Factor	Slab	Clamshell	Slab	Slab	Slab
Platform / OS	Windows	(proprietary)	(proprietary)	Android	Palm OS
Network Bands	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	GSM: 850, 1900 *	CDMA: 850, 1900 AMPS: 850	4G LTE: 4, 5, 12, 25 CDMA: 850, 1700, 1900 *	CDMA: 850, 1900
Data Technology	HSPA+ 21	EDGE	1xRTT	LTE (Cat 3)	1xRTT
Features
GPS / Location	n/a	-	Yes	n/a	n/a
Accessibility
Adjustable Text Size	n/a	-	-	n/a	n/a
Hearing Aid Compatible	Yes	-	-	Yes	-
Multiple Languages	n/a	Yes	Yes	n/a	n/a
TTY/TDD (Digital)	Yes	Yes	-	Yes	-
Alerts
Extra Display	-	Yes	-	-	-
Ringer Profiles	-	Yes	Yes	-	-
Connectivity
Bluetooth	Yes	Yes Classic Audio	Yes	Yes Classic Audio	Yes Classic Audio
Infrared (IR)	-	-	-	-	Yes
Mobile Hotspot	n/a	-	-	n/a	n/a
NFC	-	-	-	Yes	-
USB	Yes	-	-	Yes	-
Wi-Fi	Yes	-	-	Yes 4 (802.11 a,b,g,n)	-
Contacts
Picture ID	n/a	Yes	-	n/a	n/a
Ringer ID	n/a	-	-	n/a	n/a
Voice Dialing	n/a	-	Yes	n/a	n/a
Customization
Changeable Body Plates	-	-	Yes	-	-
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	Yes	-	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
Text Keyboard, Hardware	-	-	-	-	Yes
Touch Screen	Yes	-	-	Yes	Yes
Memory
Memory Card Slot	Yes	-	-	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	Yes *	-	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
DLNA	-	-	-	Yes	-
Miracast	-	-	-	Yes	-
TV Output	-	-	-	Yes	-
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	-	n/a	n/a
Voice Memo	n/a	Yes	Yes	n/a	n/a
Software
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	Yes	n/a	n/a
Speaker Phone	Yes	Yes	-	Yes	Yes
	* Some versions only
	Nokia Lumia 521 / 520	Nokia 2660	Sony Ericsson T61c	LG Optimus F7	Palm Treo 650 (CDMA)
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NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	Nokia Lumia 521 / 520	Nokia 2660	Sony Ericsson T61c	LG Optimus F7	Palm Treo 650 (CDMA)