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Phone	Motorola Charm	Palm Treo 650 (CDMA)	Motorola Droid 2	Samsung SPH-A660 / VI660	ZTE Blade Z Max
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	2.8" diag. 4 : 3	?	3.7" diag. 16 : 9	?	6" diag. 16 : 9
Display Resolution & Type	320 x 240 pixels (~143 ppi) LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)	480 x 854 pixels (~265 ppi) LCD (TFT/TFD)	128 x 160 pixels LCD (Color)	1080 x 1920 pixels (~367 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	60 Hz	?	60 Hz
Battery	1,170 mAh	?	1,390 mAh	?	4,080 mAh
Processor	720 MHz TI OMAP3410	312 MHz Intel XScale PXA270	1 GHz TI OMAP3620	?	1.4 GHz Qualcomm Snapdragon 435 (MSM8940)
RAM	?	?	?	?	2 GB
Storage	? raw hardware	? raw hardware	8 GB	? raw hardware	32 GB
Main Camera	3 megapixel	Yes	5 megapixel	-	16 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	?	QVGA (320 x 240)	WVGA / 480p	-	1080p HD
Front Camera	-	-	-	-	8 megapixel
Weight	3.88 oz (110g)	6.3 oz (179g)	5.96 oz (169g)	3.54 oz (100g)	6.58 oz (186g)
Dimensions	3.87" x 2.65" x 0.45" (98 x 67 x 11.4 mm)	4.4" x 2.3" x 0.9" (112 x 58 x 22.9 mm)	4.58" x 2.38" x 0.54" (116 x 61 x 13.7 mm)	3.3" x 1.8" x 0.87" (84 x 46 x 22.1 mm)	6.51" x 3.28" x 0.33" (165 x 83 x 8.3 mm)
Form Factor	Slab	Slab	Slide	Clamshell	Slab
Platform / OS	Android	Palm OS	Android	(proprietary)	Android
Network Bands	WCDMA: 4 GSM: 850, 900, 1800, 1900 *	CDMA: 850, 1900	CDMA: 850, 1900	CDMA: 850, 1900 AMPS: 850	4G LTE: 2, 4, 5, 12, 66 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900
Data Technology	HSDPA 3.6	1xRTT	EVDO rA	1xRTT	LTE (Cat 6)
Features
Fingerprint Reader	-	-	-	-	Yes stand-alone
Flashlight	-	-	-	-	Yes
GPS / Location	n/a	n/a	n/a	Yes	n/a
Accessibility
Hearing Aid Compatible	-	-	Yes M3, T3 (mostly tele-coil compatible)	-	Yes M4, T3 (mostly tele-coil compatible)
Multiple Languages	n/a	n/a	n/a	Yes	n/a
TTY/TDD (Digital)	Yes	-	Yes	Yes	Yes
Connectivity
Bluetooth	Yes	Yes	Yes	-	Yes
Infrared (IR)	-	Yes	-	-	-
Mobile Hotspot	n/a	n/a	n/a	-	n/a
USB	Yes Micro-USB	-	Yes Micro-USB	-	Yes USB Type C
Wi-Fi	Yes 4 (802.11 b,g,n)	-	Yes 4 (802.11 b,g,n)	-	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	n/a	n/a	Yes	n/a
Ringer ID	n/a	n/a	n/a	Yes	n/a
Voice Dialing	n/a	n/a	n/a	Yes	n/a
Customization
Custom Graphics	n/a	n/a	n/a	Yes	n/a
Custom Ringtones	n/a	n/a	n/a	Yes	n/a
Real-Music Ringers	n/a	n/a	n/a	-	n/a
Data & Network
Data Tethering	n/a	n/a	n/a	Yes	n/a
WAP / Web Browser	n/a	n/a	n/a	Yes	n/a
Input
Predictive Text Entry	n/a	n/a	n/a	Yes	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	Yes	Yes	Yes	-	-
Touch Screen	Yes Capacitive	Yes	Yes Capacitive	-	Yes Capacitive
Memory
Memory Card Slot	Yes	Yes	Yes	-	Yes
Messaging
Email Client	n/a	n/a	n/a	-	n/a
Instant Messaging	n/a	n/a	n/a	-	n/a
MMS	n/a	n/a	n/a	-	n/a
Music
FM Radio	-	-	-	-	Yes
Headphone Jack (3.5mm)	Yes	-	Yes	-	Yes
Music Player	n/a	n/a	n/a	-	n/a
Photo & Video
DLNA	-	-	Yes	-	-
Power
Fast Charging	-	-	-	-	Yes
Productivity
Alarm	n/a	n/a	n/a	Yes	n/a
Calculator	n/a	n/a	n/a	Yes	n/a
Calendar	n/a	n/a	n/a	Yes	n/a
To-Do List	n/a	n/a	n/a	Yes	n/a
Voice Memo	n/a	n/a	n/a	Yes	n/a
Software
Games	n/a	n/a	n/a	Yes	n/a
Java (J2ME)	n/a	n/a	n/a	Yes	n/a
Voice
HD Voice	-	-	-	-	Yes
Headset Jack (2.5 mm)	n/a	n/a	n/a	Yes	n/a
Speaker Phone	Yes	Yes	Yes	-	Yes
	Motorola Charm	Palm Treo 650 (CDMA)	Motorola Droid 2	Samsung SPH-A660 / VI660	ZTE Blade Z Max
	X >	< X >	< X >	< X >	< X

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


Phone	Motorola Charm	Palm Treo 650 (CDMA)	Motorola Droid 2	Samsung SPH-A660 / VI660	ZTE Blade Z Max