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Phone	Samsung SPH-Z400	Samsung SCH-A990	Palm Treo 600 (CDMA)	HTC Desire 555	Samsung Ace SPH-i325
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	1.9" diag. 4 : 3	?	?	5" diag. 16 : 9	2.3" diag. 4 : 3
Display Resolution & Type	176 x 220 pixels (~150 ppi) LCD (TFT/TFD)	240 x 320 pixels LCD (TFT/TFD)	160 x 160 pixels LCD (Color)	720 x 1280 pixels (~294 ppi) LCD (TFT/TFD)	320 x 240 pixels (~174 ppi) LCD (TFT/TFD)
Display Refresh	?	?	?	60 Hz	?
Battery	1,300 mAh	1,000 mAh	?	2,200 mAh	1,300 mAh
Processor	?	?	?	1.1 GHz Qualcomm Snapdragon 210 (MSM8909)	416 MHz PXA270
RAM	?	?	?	2 GB	?
Storage	? raw hardware	? raw hardware	? raw hardware	16 GB	? raw hardware
Main Camera	1 megapixel	3 megapixel	Yes	8 megapixel	1 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	QCIF (176 x 144)	?	-	720p HD	QVGA (320 x 240)
Front Camera	-	-	-	5 megapixel	-
Weight	4.06 oz (115g)	4.4 oz (125g)	6.2 oz (176g)	4.93 oz (140g)	3.9 oz (111g)
Dimensions	3.73" x 1.91" x 1" (95 x 49 x 25.4 mm)	3.8" x 1.88" x 0.82" (97 x 48 x 20.8 mm)	4.41" x 2.36" x 0.87" (112 x 60 x 22.1 mm)	5.78" x 2.79" x 0.33" (147 x 71 x 8.4 mm)	4.65" x 2.32" x 0.46" (118 x 59 x 11.7 mm)
Form Factor	Clamshell	Clamshell	Slab	Slab	Slab
Platform / OS	(proprietary)	(proprietary)	Palm OS	Android	Windows Mobile Standard
Network Bands	CDMA: 850, 1900	CDMA: 850, 1900	CDMA: 850, 1900	4G LTE: 2, 4, 5, 12 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900 GSM: 900, 1800
Data Technology	EVDO rA	EVDO r0	1xRTT	LTE (Cat 4)	EVDO r0
Features
Flashlight	-	Yes	-	Yes	-
GPS / Location	Yes	Yes	n/a	n/a	n/a
Ruggedized	Yes	-	-	-	-
Accessibility
Adjustable Text Size	Yes	-	n/a	n/a	n/a
Hearing Aid Compatible	Yes M4 (very compatible)	Yes M3 (mostly compatible)	-	Yes * M4, T4 (very tele-coil compatible)	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	Yes	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	Yes	Yes
Alerts
Extra Display	Yes	Yes	-	-	-
Ringer Profiles	-	-	-	-	Yes
Connectivity
Bluetooth	Yes	Yes	-	Yes	Yes
Infrared (IR)	-	-	Yes	-	-
USB	Yes	Yes	Yes	Yes Micro-USB	Yes
Wi-Fi	-	-	-	Yes 4 (802.11 b,g,n)	-
Contacts
Picture ID	Yes	Yes	n/a	n/a	n/a
Ringer ID	Yes	Yes	n/a	n/a	n/a
Voice Dialing	Yes	Yes	n/a	n/a	n/a
Customization
Custom Graphics	Yes	Yes	n/a	n/a	n/a
Custom Ringtones	Yes	Yes	n/a	n/a	n/a
Real-Music Ringers	Yes	Yes	n/a	n/a	n/a
Data & Network
Data Tethering	Yes	Yes	n/a	n/a	n/a
WAP / Web Browser	Yes	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	Yes	n/a	n/a	n/a
Side Keys	Yes	Yes	Yes	Yes	Yes
Text Keyboard, Hardware	-	-	Yes	-	Yes
Touch Screen	-	-	Yes	Yes Capacitive	-
Memory
Memory Card Slot	-	Yes	Yes	Yes	Yes
Messaging
Email Client	Yes	-	n/a	n/a	n/a
EMS / Picture Messaging	-	Yes	n/a	n/a	n/a
MMS	-	Yes	n/a	n/a	n/a
Text Messaging Templates	Yes	Yes	n/a	n/a	n/a
Music
FM Radio	-	-	-	Yes	-
Headphone Jack (3.5mm)	-	-	-	Yes	-
Music Player	-	Yes	n/a	n/a	n/a
Stereo Speakers	Yes	Yes	-	-	-
Photo & Video
DLNA	-	-	-	Yes	-
Miracast	-	-	-	Yes	-
TV Output	-	Yes	-	-	-
Productivity
Alarm	Yes	Yes	n/a	n/a	n/a
Calculator	Yes	Yes	n/a	n/a	n/a
Calendar	Yes	Yes	n/a	n/a	n/a
To-Do List	-	-	n/a	n/a	n/a
Voice Memo	Yes	Yes	n/a	n/a	n/a
Software
BREW	-	Yes	n/a	n/a	n/a
Games	Yes	Yes	n/a	n/a	n/a
Java (J2ME)	Yes	-	n/a	n/a	n/a
Voice
HD Voice	-	-	-	Yes	-
Headset Jack (2.5 mm)	Yes	-	n/a	n/a	n/a
Push-To-Talk	Yes	-	-	-	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung SPH-Z400	Samsung SCH-A990	Palm Treo 600 (CDMA)	HTC Desire 555	Samsung Ace SPH-i325
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SPH-Z400	Samsung SCH-A990	Palm Treo 600 (CDMA)	HTC Desire 555	Samsung Ace SPH-i325