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Phone	Nokia Lumia 635 (CDMA)	Ericsson R520	Nokia 1661	Motorola V878	Nokia 3650
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	4.5" diag. 16 : 9	?	1.8" diag. 4 : 3	?	?
Display Resolution & Type	480 x 854 pixels (~218 ppi) LCD (TFT/TFD)	?	128 x 160 pixels (~114 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	176 x 208 pixels LCD (TFT/TFD)
Display Refresh	?	?	?	?	?
Battery	1,830 mAh	?	860 mAh	?	850 mAh
Processor	1.2 GHz Qualcomm Snapdragon 400 (MSM8926)	?	?	?	?
RAM	512 MB	?	?	?	?
Storage	8 GB	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	5 megapixel	-	-	Yes	Yes
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	720p HD	-	-	?	?
Front Camera	-	-	-	-	-
Weight	4.73 oz (134g)	4.23 oz (120g)	2.9 oz (82g)	2.82 oz (80g)	4.59 oz (130g)
Dimensions	5.1" x 2.63" x 0.36" (130 x 67 x 9.1 mm)	5.12" x 1.97" x 0.63" (130 x 50 x 16 mm)	4.25" x 1.8" x 0.53" (108 x 46 x 13.5 mm)	3.23" x 1.65" x 0.85" (82 x 42 x 21.6 mm)	5.1" x 2.24" x 1" (130 x 57 x 25.4 mm)
Form Factor	Slab	Slab	Slab	Clamshell	Slab
Platform / OS	Windows	(proprietary)	(proprietary)	(proprietary)	S60 (Symbian)
Network Bands	4G LTE: 25, 26, 41 WCDMA: 1, 2, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900	GSM: 900, 1800, 1900	GSM: 850, 1900	GSM: 900, 1800, 1900	GSM: 900, 1800, 1900
Data Technology	LTE (Cat 3)	GPRS	-	GPRS	GPRS
Features
Flashlight	-	-	Yes	-	-
GPS / Location	n/a	-	-	-	n/a
Accessibility
Hearing Aid Compatible	Yes	-	-	-	-
Multiple Languages	n/a	Yes	-	Yes	n/a
TTY/TDD (Digital)	Yes	-	-	-	Yes
Alerts
Extra Display	-	-	-	Yes	-
Ringer Profiles	-	Yes	Yes	Yes	Yes
Connectivity
Bluetooth	Yes Classic Audio	Yes HSP, Sync, OPP, DUN	-	-	Yes Classic Audio
Infrared (IR)	-	Yes	-	-	Yes
Mobile Hotspot	n/a	-	-	-	n/a
USB	Yes Micro-USB	-	-	Yes	-
Wi-Fi	Yes 4 (802.11 b,g,n)	-	-	-	-
Contacts
Picture ID	n/a	-	-	Yes	n/a
Ringer ID	n/a	-	-	Yes	n/a
Voice Dialing	n/a	Yes	-	Yes	n/a
Customization
Changeable Body Plates	-	-	-	-	Yes
Custom Graphics	n/a	-	-	Yes	n/a
Custom Ringtones	n/a	Yes	-	Yes	n/a
Real-Music Ringers	n/a	-	-	-	n/a
Data & Network
Data Tethering	n/a	Yes	-	Yes	n/a
WAP / Web Browser	n/a	Yes	-	Yes	n/a
Input
Predictive Text Entry	n/a	Yes	Yes	Yes	n/a
Side Keys	Yes	Yes	-	Yes	-
Touch Screen	Yes	-	-	-	-
Memory
Memory Card Slot	Yes	-	-	-	Yes
Messaging
Email Client	n/a	-	-	-	n/a
EMS / Picture Messaging	n/a	-	-	Yes	n/a
Instant Messaging	n/a	-	-	-	n/a
MMS	n/a	-	-	Yes	n/a
Text Messaging Templates	n/a	Yes	-	-	n/a
Music
FM Radio	Yes	-	Yes	-	-
Headphone Jack (3.5mm)	Yes	-	-	-	-
Music Player	n/a	-	-	-	n/a
Photo & Video
DLNA	Yes	-	-	-	-
Productivity
Alarm	n/a	Yes	Yes	Yes	n/a
Calculator	n/a	Yes	Yes	Yes	n/a
Calendar	n/a	Yes	Yes	Yes	n/a
To-Do List	n/a	-	-	-	n/a
Voice Memo	n/a	Yes	Yes	Yes	n/a
Software
Games	n/a	Yes	Yes	Yes	n/a
Java (J2ME)	n/a	-	-	Yes	n/a
Voice
Headset Jack (2.5 mm)	n/a	-	Yes	-	n/a
Speaker Phone	Yes	Yes	Yes	-	Yes
	* Some versions only
	Nokia Lumia 635 (CDMA)	Ericsson R520	Nokia 1661	Motorola V878	Nokia 3650
	X >	< X >	< X >	< X >	< X

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


Phone	Nokia Lumia 635 (CDMA)	Ericsson R520	Nokia 1661	Motorola V878	Nokia 3650