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Phone	HP iPAQ 510 Voice Messenger	AT&T Calypso	Siemens CT66 / C66 / C65 / C71 / C70	Motorola RAZR V3m	HTC TyTN / 8525 / JasJam (Hermes)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2" diag. 4 : 3	5.5" diag. 18 : 9	?	?	?
Display Resolution & Type	176 x 220 pixels (~141 ppi) LCD (TFT/TFD)	480 x 960 pixels (~195 ppi) LCD (TFT/TFD)	130 x 130 pixels LCD (Color)	176 x 220 pixels LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)
Display Refresh	?	60 Hz	?	?	?
Battery	1,100 mAh	2,500 mAh	600 mAh	780 mAh	1,350 mAh
Processor	200 MHz TI OMAP 850	1.5 GHz MediaTek MT6739	?	?	400 MHz Samsung
RAM	?	1 GB	?	?	?
Storage	? raw hardware	16 GB	? raw hardware	? raw hardware	? raw hardware
Main Camera	1 megapixel	5 megapixel	Yes	1 megapixel	2 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QCIF (176 x 144)	1080p HD	-	?	CIF (352 x 288)
Front Camera	-	5 megapixel	-	-	-
Weight	3.6 oz (102g)	6 oz (170g)	3 oz (85g)	3.49 oz (99g)	6.21 oz (176g)
Dimensions	4.21" x 1.91" x 0.64" (107 x 49 x 16.3 mm)	5.91" x 2.87" x 0.39" (150 x 73 x 9.9 mm)	4.1" x 1.8" x 0.7" (104 x 46 x 17.8 mm)	3.9" x 2.1" x 0.57" (99 x 53 x 14.5 mm)	4.43" x 2.28" x 0.86" (113 x 58 x 21.8 mm)
Form Factor	Slab	Slab	Slab	Clamshell	Slide
Platform / OS	Windows Mobile Standard	Android	(proprietary)	(proprietary)	Windows Mobile Professional
Network Bands	GSM: 850, 900, 1800, 1900	4G LTE: 2, 4, 5, 12, 14, 30 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	GSM: 850, 1800, 1900 *	CDMA: 850, 1900	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900
Data Technology	EDGE	LTE (Cat 4)	GPRS	EVDO r0	HSDPA 1.8
Features
Flashlight	-	Yes	-	-	-
GPS / Location	n/a	n/a	-	Yes	n/a
Accessibility
Adjustable Text Size	n/a	n/a	-	-	n/a
Hearing Aid Compatible	-	Yes M3, T4 (very tele-coil compatible)	-	Yes M4, T4 (very tele-coil compatible)	-
Multiple Languages	n/a	n/a	Yes	Yes	n/a
TTY/TDD (Digital)	-	Yes	-	Yes	Yes
Alerts
Extra Display	-	-	-	Yes	-
Ringer Profiles	Yes	-	Yes	-	-
Connectivity
Bluetooth	Yes	Yes	-	Yes	Yes
Infrared (IR)	-	-	Yes	-	Yes
USB	Yes Mini-USB	Yes USB Type C	Yes	Yes Mini-USB	Yes Mini-USB
Wi-Fi	Yes 802.11 b,g	Yes 4 (802.11 b,g,n)	-	-	Yes * 802.11 b,g
Contacts
Picture ID	n/a	n/a	Yes	Yes	n/a
Ringer ID	n/a	n/a	Yes	Yes	n/a
Voice Dialing	n/a	n/a	-	Yes	n/a
Customization
Changeable Body Plates	-	-	Yes	-	-
Custom Graphics	n/a	n/a	Yes	Yes	n/a
Custom Ringtones	n/a	n/a	Yes	Yes	n/a
Real-Music Ringers	n/a	n/a	-	Yes	n/a
Data & Network
Data Tethering	n/a	n/a	-	Yes	n/a
External Antenna Jack	n/a	n/a	-	-	n/a
WAP / Web Browser	n/a	n/a	Yes	Yes	n/a
Input
Predictive Text Entry	n/a	n/a	Yes	Yes	n/a
Side Keys	Yes	Yes	-	Yes	Yes
Text Keyboard, Hardware	-	-	-	-	Yes
Touch Screen	-	Yes Capacitive	-	-	Yes
Memory
Memory Card Slot	Yes	Yes	-	Yes	Yes
Messaging
Email Client	n/a	n/a	-	-	n/a
EMS / Picture Messaging	n/a	n/a	Yes	Yes	n/a
Instant Messaging	n/a	n/a	-	Yes *	n/a
MMS	n/a	n/a	Yes	Yes	n/a
Text Messaging Templates	n/a	n/a	Yes	Yes *	n/a
Music
Headphone Jack (3.5mm)	-	Yes	-	-	-
Music Player	n/a	n/a	-	Yes	n/a
Photo & Video
Video Calling	n/a	n/a	-	-	n/a
Productivity
Alarm	n/a	n/a	Yes	Yes	n/a
Calculator	n/a	n/a	Yes	Yes	n/a
Calendar	n/a	n/a	Yes	Yes	n/a
To-Do List	n/a	n/a	Yes	-	n/a
Voice Memo	n/a	n/a	Yes	Yes	n/a
Software
BREW	n/a	n/a	-	Yes	n/a
Games	n/a	n/a	Yes	Yes	n/a
Java (J2ME)	n/a	n/a	Yes	-	n/a
Voice
Call Screening	-	-	Yes	-	-
HD Voice	-	Yes	-	-	-
Headset Jack (2.5 mm)	n/a	n/a	-	-	n/a
Push-To-Talk	-	-	Yes *	-	Yes *
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	HP iPAQ 510 Voice Messenger	AT&T Calypso	Siemens CT66 / C66 / C65 / C71 / C70	Motorola RAZR V3m	HTC TyTN / 8525 / JasJam (Hermes)
	X >	< X >	< X >	< X >	< X

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


Phone	HP iPAQ 510 Voice Messenger	AT&T Calypso	Siemens CT66 / C66 / C65 / C71 / C70	Motorola RAZR V3m	HTC TyTN / 8525 / JasJam (Hermes)