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Phone	Samsung SGH-A157	HTC G2	HTC Touch Pro2 (GSM) / Tilt 2	HTC EVO 4G	Palm Treo 650 (CDMA)
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	1.8" diag. 4 : 3	3.7" diag. 5 : 3	3.6" diag. 5 : 3	4.3" diag. 5 : 3	?
Display Resolution & Type	128 x 160 pixels (~116 ppi) LCD (TFT/TFD)	480 x 800 pixels (~252 ppi) LCD (TFT/TFD)	480 x 800 pixels (~259 ppi) LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)
Display Refresh	?	60 Hz	?	60 Hz	?
Battery	800 mAh	1,300 mAh	1,500 mAh	1,500 mAh	?
Processor	?	800 MHz Qualcomm S2 MSM7230	528 MHz Qualcomm MSM7200A	1 GHz Qualcomm Snapdragon S1 QSD8650	312 MHz Intel XScale PXA270
RAM	?	?	?	?	?
Storage	256 MB	? raw hardware	? raw hardware	? raw hardware	? raw hardware
Main Camera	-	5 megapixel	3 megapixel	8 megapixel	Yes
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	720p HD	?	720p HD	QVGA (320 x 240)
Front Camera	-	-	-	Yes	-
Weight	2.99 oz (85g)	6.5 oz (184g)	6.61 oz (187g)	6 oz (170g)	6.3 oz (179g)
Dimensions	3.83" x 1.84" x 0.65" (97 x 47 x 16.5 mm)	4.68" x 2.37" x 0.55" (119 x 60 x 14 mm)	4.59" x 2.36" x 0.68" (117 x 60 x 17.3 mm)	4.8" x 2.6" x 0.5" (122 x 66 x 12.7 mm)	4.4" x 2.3" x 0.9" (112 x 58 x 22.9 mm)
Form Factor	Clamshell	Slab	Slab	Slab	Slab
Platform / OS	(proprietary)	Android	Windows Mobile Professional	Android	Palm OS
Network Bands	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900 *	4G WiMAX: 41 CDMA: 850, 1900	CDMA: 850, 1900
Data Technology	?	HSPA 14.4	HSPA 7.2	WiMAX	1xRTT
Features
GPS / Location	Yes	n/a	n/a	n/a	n/a
Accessibility
Adjustable Text Size	Yes	n/a	n/a	n/a	n/a
Hearing Aid Compatible	Yes M4 (very compatible)	Yes M3 (mostly compatible)	-	Yes	-
Multiple Languages	Yes	n/a	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	-	Yes	Yes	-
Alerts
Ringer Profiles	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	Yes	Yes	-
Wi-Fi	-	Yes 4 (802.11 b,g,n)	Yes 802.11 b,g	Yes 802.11 b,g	-
Contacts
Picture ID	Yes	n/a	n/a	n/a	n/a
Ringer ID	Yes	n/a	n/a	n/a	n/a
Voice Dialing	-	n/a	n/a	n/a	n/a
Customization
Custom Graphics	Yes	n/a	n/a	n/a	n/a
Custom Ringtones	Yes	n/a	n/a	n/a	n/a
Real-Music Ringers	Yes	n/a	n/a	n/a	n/a
Data & Network
Data Tethering	-	n/a	n/a	n/a	n/a
WAP / Web Browser	Yes	n/a	n/a	n/a	n/a
Input
Predictive Text Entry	Yes	n/a	n/a	n/a	n/a
Side Keys	-	Yes	Yes	Yes	Yes
Stylus	-	-	Yes	-	-
Text Keyboard, Hardware	-	Yes	Yes	-	Yes
Touch Screen	-	Yes Capacitive	Yes	Yes Capacitive	Yes
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	Yes	n/a	n/a	n/a	n/a
Text Messaging Templates	Yes	n/a	n/a	n/a	n/a
Music
FM Radio	-	-	-	Yes	-
Headphone Jack (3.5mm)	-	Yes	-	Yes	-
Music Player	-	n/a	n/a	n/a	n/a
Photo & Video
TV Output	-	-	Yes	Yes	-
Video Calling	-	n/a	n/a	n/a	n/a
Productivity
Alarm	Yes	n/a	n/a	n/a	n/a
Calculator	Yes	n/a	n/a	n/a	n/a
Calendar	Yes	n/a	n/a	n/a	n/a
To-Do List	Yes	n/a	n/a	n/a	n/a
Voice Memo	Yes	n/a	n/a	n/a	n/a
Software
Games	-	n/a	n/a	n/a	n/a
Java (J2ME)	-	n/a	n/a	n/a	n/a
Voice
Headset Jack (2.5 mm)	-	n/a	n/a	n/a	n/a
Push-To-Talk	-	-	Yes *	-	-
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	* Some versions only
	Samsung SGH-A157	HTC G2	HTC Touch Pro2 (GSM) / Tilt 2	HTC EVO 4G	Palm Treo 650 (CDMA)
	X >	< X >	< X >	< X >	< X

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


Phone	Samsung SGH-A157	HTC G2	HTC Touch Pro2 (GSM) / Tilt 2	HTC EVO 4G	Palm Treo 650 (CDMA)