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Phone	Motorola Rival A455	Nokia Lumia 635 (CDMA)	Sanyo SCP-3810 / Mirro	Samsung SGH-X640	Nokia N73
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2.2" diag. 4 : 3	4.5" diag. 16 : 9	2.4" diag. 4 : 3	?	?
Display Resolution & Type	176 x 220 pixels (~131 ppi) LCD (TFT/TFD)	480 x 854 pixels (~218 ppi) LCD (TFT/TFD)	240 x 320 pixels (~167 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)
Display Refresh	?	?	?	?	?
Battery	940 mAh	1,830 mAh	1,000 mAh	800 mAh	1,100 mAh
Processor	?	1.2 GHz Qualcomm Snapdragon 400 (MSM8926)	?	?	?
RAM	?	512 MB	?	?	?
Storage	? raw hardware	8 GB	? raw hardware	? raw hardware	? raw hardware
Main Camera	2 megapixel	5 megapixel	1 megapixel	Yes	3 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QVGA (320 x 240)	720p HD	-	-	CIF (352 x 288)
Front Camera	-	-	-	-	-
Weight	4.48 oz (127g)	4.73 oz (134g)	3.97 oz (112g)	3 oz (85g)	4.09 oz (116g)
Dimensions	3.82" x 1.96" x 0.73" (97 x 50 x 18.5 mm)	5.1" x 2.63" x 0.36" (130 x 67 x 9.1 mm)	3.82" x 2.01" x 0.71" (97 x 51 x 18.1 mm)	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.33" x 1.93" x 0.75" (110 x 49 x 19.1 mm)
Form Factor	Slide	Slab	Clamshell	Clamshell	Slab
Platform / OS	(proprietary)	Windows	(proprietary)	(proprietary)	S60 (Symbian)
Network Bands	CDMA: 850, 1900	4G LTE: 25, 26, 41 WCDMA: 1, 2, 5 CDMA: 800, 850, 1900 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	GSM: 900, 1800, 1900	WCDMA: 1 GSM: 850, 900, 1800, 1900
Data Technology	EVDO r0	LTE (Cat 3)	1xRTT	GPRS	EDGE
Features
GPS / Location	Yes	n/a	Yes	-	n/a
Accessibility
Adjustable Text Size	-	n/a	Yes	-	n/a
Hearing Aid Compatible	Yes M3, T3 (mostly tele-coil compatible)	Yes M3, T4 (very tele-coil compatible)	Yes M4, T4 (very tele-coil compatible)	-	-
Multiple Languages	Yes	n/a	Yes	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	-	-
Alerts
Extra Display	-	-	Yes	-	-
Ringer Profiles	-	-	-	-	Yes
Connectivity
Bluetooth	Yes	Yes	Yes	-	Yes
Infrared (IR)	-	-	-	-	Yes
Mobile Hotspot	-	n/a	-	-	n/a
USB	Yes Micro-USB	Yes Micro-USB	Yes Micro-USB	-	Yes
Wi-Fi	-	Yes 4 (802.11 b,g,n)	-	-	-
Contacts
Picture ID	Yes	n/a	Yes	Yes	n/a
Ringer ID	Yes	n/a	Yes	Yes	n/a
Voice Dialing	Yes	n/a	Yes	-	n/a
Customization
Custom Graphics	Yes	n/a	Yes	Yes	n/a
Custom Ringtones	Yes	n/a	Yes	Yes	n/a
Real-Music Ringers	Yes	n/a	Yes	-	n/a
Data & Network
Data Tethering	Yes	n/a	Yes	-	n/a
WAP / Web Browser	Yes	n/a	Yes	Yes	n/a
Input
Predictive Text Entry	-	n/a	Yes	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	-	-	-	-
Touch Screen	Yes	Yes Capacitive	-	-	-
Memory
Memory Card Slot	Yes	Yes	-	-	Yes
Messaging
Email Client	Yes	n/a	Yes	-	n/a
EMS / Picture Messaging	Yes	n/a	-	Yes	n/a
Instant Messaging	Yes	n/a	Yes	-	n/a
MMS	Yes	n/a	-	Yes	n/a
Text Messaging Templates	Yes	n/a	Yes	Yes	n/a
Music
FM Radio	-	Yes	-	-	Yes
Headphone Jack (3.5mm)	Yes	Yes	-	-	-
Music Player	Yes	n/a	-	-	n/a
Stereo Speakers	-	-	-	-	Yes
Photo & Video
DLNA	-	Yes	-	-	-
Video Calling	-	n/a	-	-	n/a
Productivity
Alarm	Yes	n/a	Yes	Yes	n/a
Calculator	Yes	n/a	Yes	Yes	n/a
Calendar	Yes	n/a	Yes	Yes	n/a
To-Do List	-	n/a	Yes	Yes	n/a
Voice Memo	Yes	n/a	Yes	Yes	n/a
Software
BREW	Yes	n/a	-	-	n/a
Games	Yes	n/a	Yes	Yes	n/a
Java (J2ME)	-	n/a	Yes	Yes	n/a
Voice
Headset Jack (2.5 mm)	-	n/a	Yes	Yes	n/a
Push-To-Talk	-	-	-	-	Yes *
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Motorola Rival A455	Nokia Lumia 635 (CDMA)	Sanyo SCP-3810 / Mirro	Samsung SGH-X640	Nokia N73
	X >	< X >	< X >	< X >	< X

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


Phone	Motorola Rival A455	Nokia Lumia 635 (CDMA)	Sanyo SCP-3810 / Mirro	Samsung SGH-X640	Nokia N73