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Phone	HTC G2	Samsung SGH-A157	Palm Treo 650 (CDMA)	HTC EVO 4G	Samsung Galaxy J2 / J2 Pure / J2 Dash
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	3.7" diag. 5 : 3	1.8" diag. 4 : 3	?	4.3" diag. 5 : 3	5" diag. 16 : 9
Display Resolution & Type	480 x 800 pixels (~252 ppi) LCD (TFT/TFD)	128 x 160 pixels (~116 ppi) LCD (TFT/TFD)	320 x 320 pixels LCD (TFT/TFD)	480 x 800 pixels (~217 ppi) LCD (TFT/TFD)	540 x 960 pixels (~220 ppi) LCD (TFT/TFD)
Display Refresh	60 Hz	?	?	60 Hz	60 Hz
Battery	1,300 mAh	800 mAh	?	1,500 mAh	2,600 mAh
Processor	800 MHz Qualcomm S2 MSM7230	?	312 MHz Intel XScale PXA270	1 GHz Qualcomm Snapdragon S1 QSD8650	1.4 GHz Samsung Exynos 7570
RAM	?	?	?	?	2 GB
Storage	? raw hardware	256 MB	? raw hardware	? raw hardware	16 GB
Main Camera	5 megapixel	-	Yes	8 megapixel	8 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	720p HD	-	QVGA (320 x 240)	720p HD	1080p HD
Front Camera	-	-	-	Yes	5 megapixel
Weight	6.5 oz (184g)	2.99 oz (85g)	6.3 oz (179g)	6 oz (170g)	5.43 oz (154g)
Dimensions	4.68" x 2.37" x 0.55" (119 x 60 x 14 mm)	3.83" x 1.84" x 0.65" (97 x 47 x 16.5 mm)	4.4" x 2.3" x 0.9" (112 x 58 x 22.9 mm)	4.8" x 2.6" x 0.5" (122 x 66 x 12.7 mm)	5.65" x 2.84" x 0.35" (144 x 72 x 8.9 mm)
Form Factor	Slab	Clamshell	Slab	Slab	Slab
Platform / OS	Android	(proprietary)	Palm OS	Android	Android
Network Bands	WCDMA: 1, 4 GSM: 850, 900, 1800, 1900	WCDMA: 2, 5 GSM: 850, 900, 1800, 1900	CDMA: 850, 1900	4G WiMAX: 41 CDMA: 850, 1900	4G LTE: 2, 3, 4, 5, 7, 12, 14, 66, 71 WCDMA: 2, 4, 5 GSM: 850, 900, 1800, 1900 *
Data Technology	HSPA 14.4	?	1xRTT	WiMAX	LTE (Cat 4)
Features
Flashlight	-	-	-	-	Yes
GPS / Location	n/a	Yes	n/a	n/a	n/a
Accessibility
Adjustable Text Size	n/a	Yes	n/a	n/a	n/a
Hearing Aid Compatible	Yes M3 (mostly compatible)	Yes M4 (very compatible)	-	Yes	Yes M3, T3 (mostly tele-coil compatible)
Multiple Languages	n/a	Yes	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	Yes Micro-USB	-	Yes	Yes Micro-USB
Wi-Fi	Yes 4 (802.11 b,g,n)	-	-	Yes 802.11 b,g	Yes 4 (802.11 b,g,n)
Contacts
Picture ID	n/a	Yes	n/a	n/a	n/a
Ringer ID	n/a	Yes	n/a	n/a	n/a
Voice Dialing	n/a	-	n/a	n/a	n/a
Customization
Custom Graphics	n/a	Yes	n/a	n/a	n/a
Custom Ringtones	n/a	Yes	n/a	n/a	n/a
Real-Music Ringers	n/a	Yes	n/a	n/a	n/a
Data & Network
Data Tethering	n/a	-	n/a	n/a	n/a
WAP / Web Browser	n/a	Yes	n/a	n/a	n/a
Input
Predictive Text Entry	n/a	Yes	n/a	n/a	n/a
Side Keys	Yes	-	Yes	Yes	Yes
Text Keyboard, Hardware	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	Yes	n/a	n/a	n/a
Text Messaging Templates	n/a	Yes	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
TV Output	-	-	-	Yes	-
Productivity
Alarm	n/a	Yes	n/a	n/a	n/a
Calculator	n/a	Yes	n/a	n/a	n/a
Calendar	n/a	Yes	n/a	n/a	n/a
To-Do List	n/a	Yes	n/a	n/a	n/a
Voice Memo	n/a	Yes	n/a	n/a	n/a
Software
Games	n/a	-	n/a	n/a	n/a
Voice
Headset Jack (2.5 mm)	n/a	-	n/a	n/a	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	HTC G2	Samsung SGH-A157	Palm Treo 650 (CDMA)	HTC EVO 4G	Samsung Galaxy J2 / J2 Pure / J2 Dash
	X >	< X >	< X >	< X >	< X

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


Phone	HTC G2	Samsung SGH-A157	Palm Treo 650 (CDMA)	HTC EVO 4G	Samsung Galaxy J2 / J2 Pure / J2 Dash