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Phone	Nokia Lumia 521 / 520	Nokia 6650 fold	ZTE Savvy
Current U.S. Carriers	(none)	(none)	(none)
Global Availability	Released	Released	Released
Display Size	4" diag. 5 : 3	2.2" diag. 4 : 3	4" diag. 5 : 3
Display Resolution & Type	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)	240 x 320 pixels (~182 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz
Battery	1,430 mAh	1,500 mAh	1,650 mAh
Processor	1 GHz Qualcomm Snapdragon S4 MSM8270	369 MHz ARM 11	1 GHz Qualcomm MSM8625
RAM	512 MB	?	768 MB
Storage	8 GB	? raw hardware	4 GB
Main Camera	5 megapixel	2 megapixel	5 megapixel
Wide Camera	-	-	-
Tele Camera	-	-	-
Video Capture	720p HD	QVGA (320 x 240)	WVGA / 480p
Front Camera	-	-	-
Weight	4.39 oz (124g)	3.95 oz (112g)	4.43 oz (126g)
Dimensions	4.72" x 2.52" x 0.39" (120 x 64 x 9.9 mm)	3.93" x 1.86" x 0.64" (100 x 47 x 16.2 mm)	4.96" x 2.55" x 0.42" (126 x 65 x 10.7 mm)
Platform / OS	Windows	S60 (Symbian)	Android
Network Bands	WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900
Data Technology	HSPA+ 21	HSDPA 3.6	EVDO rA
Features
Flashlight	-	-	Yes
Accessibility
Hearing Aid Compatible	Yes M3, T4 (very tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)	Yes M4, T4 (very tele-coil compatible)
TTY/TDD (Digital)	Yes	-	Yes
Alerts
Extra Display	-	Yes	-
Ringer Profiles	-	Yes	-
Connectivity
Bluetooth	Yes	Yes	Yes
USB	Yes	Yes Micro-USB	Yes Micro-USB
Wi-Fi	Yes	-	Yes 4 (802.11 b,g,n)
Input
Side Keys	Yes	Yes	Yes
Touch Screen	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes	Yes
Music
Headphone Jack (3.5mm)	Yes	-	Yes
Photo & Video
DLNA	-	-	Yes
Voice
Speaker Phone	Yes	Yes	Yes
	Nokia Lumia 521 / 520	Nokia 6650 fold	ZTE Savvy
	X >	< X >	< X

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


Phone	Nokia Lumia 521 / 520	Nokia 6650 fold	ZTE Savvy