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Phone	Samsung SGH-X640	BlackBerry Storm2 9550	Motorola Rival A455	Nokia 6275i	ZTE ZMAX 2
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	3.3" diag. 4 : 3	2.2" diag. 4 : 3	?	5.5" diag. 16 : 9
Display Resolution & Type	128 x 160 pixels LCD (TFT/TFD)	360 x 480 pixels (~185 ppi) LCD (TFT/TFD)	176 x 220 pixels (~131 ppi) LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	720 x 1280 pixels (~267 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	60 Hz
Battery	800 mAh	1,400 mAh	940 mAh	1,150 mAh	3,000 mAh
Processor	?	?	?	?	1.2 GHz Qualcomm Snapdragon 400 (MSM8916)
RAM	?	?	?	?	2 GB
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	16 GB
Main Camera	Yes	3 megapixel	2 megapixel	2 megapixel	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	?	QVGA (320 x 240)	?	720p HD
Front Camera	-	-	-	-	2 megapixel
Weight	3 oz (85g)	5.64 oz (160g)	4.48 oz (127g)	3.7 oz (105g)	5.99 oz (170g)
Dimensions	3.43" x 1.81" x 0.91" (87 x 46 x 23.1 mm)	4.43" x 2.45" x 0.55" (113 x 62 x 14 mm)	3.82" x 1.96" x 0.73" (97 x 50 x 18.5 mm)	4.29" x 1.69" x 0.67" (109 x 43 x 17 mm)	6.06" x 2.99" x 0.37" (154 x 76 x 9.4 mm)
Form Factor	Clamshell	Slab	Slide	Slab	Slab
Platform / OS	(proprietary)	BlackBerry OS	(proprietary)	(proprietary)	Android
Network Bands	GSM: 900, 1800, 1900	WCDMA: 1 CDMA: 850, 1900 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	CDMA: 850, 1900 AMPS: 850	4G LTE: 2, 4, 5, 12 WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900 *
Data Technology	GPRS	EVDO rA	EVDO r0	1xRTT	LTE (Cat 4)
Features
GPS / Location	-	n/a	Yes	Yes	n/a
Accessibility
Adjustable Text Size	-	n/a	-	-	n/a
Hearing Aid Compatible	-	Yes M3 (mostly compatible)	Yes M3, T3 (mostly tele-coil compatible)	-	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	n/a	Yes	Yes	n/a
TTY/TDD (Digital)	-	Yes	Yes	Yes	Yes
Alerts
Ringer Profiles	-	Yes	-	Yes	-
Connectivity
Bluetooth	-	Yes	Yes	Yes	Yes
Infrared (IR)	-	-	-	Yes	-
Mobile Hotspot	-	n/a	-	-	n/a
USB	-	Yes	Yes Micro-USB	Yes	Yes Micro-USB
Wi-Fi	-	Yes 802.11 b,g	-	-	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	-	n/a	Yes	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	-	n/a	Yes	Yes	n/a
Data & Network
Data Tethering	-	n/a	Yes	Yes	n/a
WAP / Web Browser	Yes	n/a	Yes	Yes	n/a
Input
Predictive Text Entry	Yes	n/a	-	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	Yes	-	-
Touch Screen	-	Yes Capacitive	Yes	-	Yes Capacitive
Memory
Memory Card Slot	-	Yes	Yes	Yes	Yes
Messaging
Email Client	-	n/a	Yes	-	n/a
EMS / Picture Messaging	Yes	n/a	Yes	-	n/a
Instant Messaging	-	n/a	Yes	-	n/a
MMS	Yes	n/a	Yes	Yes	n/a
Text Messaging Templates	Yes	n/a	Yes	Yes	n/a
Music
FM Radio	-	-	-	Yes	-
Headphone Jack (3.5mm)	-	Yes	Yes	-	Yes
Music Player	-	n/a	Yes	Yes	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	Yes	n/a	-	Yes	n/a
Voice Memo	Yes	n/a	Yes	Yes	n/a
Software
BREW	-	n/a	Yes	Yes *	n/a
Games	Yes	n/a	Yes	Yes	n/a
Java (J2ME)	Yes	n/a	-	Yes *	n/a
Voice
Headset Jack (2.5 mm)	Yes	n/a	-	Yes	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung SGH-X640	BlackBerry Storm2 9550	Motorola Rival A455	Nokia 6275i	ZTE ZMAX 2
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NOTE: Differences are highlighted with bold / black text for visual clarity only.


Phone	Samsung SGH-X640	BlackBerry Storm2 9550	Motorola Rival A455	Nokia 6275i	ZTE ZMAX 2