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Phone	BlackBerry 8820	Nokia 3220	Samsung Jack i637	Sanyo RL-4920	Pantech Duo C810
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	?	2.4" diag. 4 : 3	?	2.2" diag. 4 : 3
Display Resolution & Type	320 x 240 pixels LCD (TFT/TFD)	128 x 128 pixels LCD (TFT/TFD)	320 x 240 pixels (~167 ppi) LCD (TFT/TFD)	128 x 112 pixels LCD (Color)	240 x 320 pixels (~182 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	?	?
Battery	1,400 mAh	760 mAh	1,480 mAh	1,700 mAh	1,320 mAh
Processor	?	?	?	?	ARM 920t PXA27x
RAM	?	?	?	?	?
Storage	? raw hardware	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	-	Yes	3 megapixel	-	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	?	?	-	QVGA (320 x 240)
Front Camera	-	-	-	-	-
Weight	4.73 oz (134g)	3.03 oz (86g)	3.6 oz (102g)	4.03 oz (114g)	3.88 oz (110g)
Dimensions	4.49" x 2.6" x 0.55" (114 x 66 x 14 mm)	4.11" x 1.74" x 0.74" (104 x 44 x 18.8 mm)	4.4" x 2.4" x 0.5" (112 x 61 x 12.7 mm)	4.22" x 1.85" x 0.85" (107 x 47 x 21.6 mm)	4.01" x 1.97" x 0.78" (102 x 50 x 19.8 mm)
Form Factor	Slab	Slab	Slab	Slab	Slide
Platform / OS	BlackBerry OS	(proprietary)	Windows Mobile Standard	(proprietary)	Windows Mobile Standard
Network Bands	GSM: 850, 900, 1800, 1900	GSM: 850, 1800, 1900 *	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900 AMPS: 850	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900
Data Technology	EDGE	EDGE	HSDPA 3.6	1xRTT	HSDPA 1.8
Features
GPS / Location	n/a	-	n/a	Yes	n/a
Accessibility
Hearing Aid Compatible	-	-	Yes M3 (mostly compatible)	-	-
Multiple Languages	n/a	Yes	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	Yes	-	Yes	-
Alerts
Ringer Profiles	Yes	Yes	Yes	-	Yes
Connectivity
Bluetooth	Yes	-	Yes	-	Yes
USB	Yes Mini-USB	Yes	Yes	Yes	Yes
Wi-Fi	Yes	-	Yes 802.11 b,g	-	-
Contacts
Picture ID	n/a	Yes	n/a	Yes	n/a
Ringer ID	n/a	Yes	n/a	Yes	n/a
Voice Dialing	n/a	Yes	n/a	Yes	n/a
Customization
Changeable Body Plates	-	Yes	-	-	-
Custom Graphics	n/a	Yes	n/a	Yes	n/a
Custom Ringtones	n/a	Yes	n/a	Yes	n/a
Real-Music Ringers	n/a	-	n/a	-	n/a
Data & Network
Data Tethering	n/a	Yes	n/a	-	n/a
WAP / Web Browser	n/a	Yes	n/a	Yes	n/a
Input
Predictive Text Entry	n/a	Yes	n/a	Yes	n/a
Side Keys	Yes	-	Yes	Yes	Yes
Text Keyboard, Hardware	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	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	n/a	-	n/a
Music
Music Player	n/a	-	n/a	-	n/a
Productivity
Alarm	n/a	Yes	n/a	Yes	n/a
Calculator	n/a	Yes	n/a	Yes	n/a
Calendar	n/a	Yes	n/a	Yes	n/a
To-Do List	n/a	-	n/a	Yes	n/a
Voice Memo	n/a	Yes	n/a	Yes	n/a
Software
Games	n/a	Yes	n/a	Yes	n/a
Java (J2ME)	n/a	Yes	n/a	Yes	n/a
Voice
Call Screening	-	-	-	Yes	-
Headset Jack (2.5 mm)	n/a	-	n/a	Yes	n/a
Push-To-Talk	Yes *	-	-	Yes	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	BlackBerry 8820	Nokia 3220	Samsung Jack i637	Sanyo RL-4920	Pantech Duo C810
	X >	< X >	< X >	< X >	< X

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


Phone	BlackBerry 8820	Nokia 3220	Samsung Jack i637	Sanyo RL-4920	Pantech Duo C810