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Phone	LG PM-225	ZTE Z331	HTC EVO V 4G / EVO 3D (CDMA)	AT&T Vista	Samsung Galaxy Ring / Prevail 2
Current U.S. Carriers	(none)	(none)	(none)	(none)	(none)
Global Availability	Released	Released	Released	Released	Released
Display Size	?	2.4" diag. 4 : 3	4.3" diag. 16 : 9	5.5" diag. 18 : 9	4" diag. 5 : 3
Display Resolution & Type	128 x 160 pixels LCD (STN)	176 x 220 pixels (~117 ppi) LCD (TFT/TFD)	540 x 960 pixels (~256 ppi) LCD (TFT/TFD)	720 x 1440 pixels (~293 ppi) LCD (TFT/TFD)	480 x 800 pixels (~233 ppi) LCD (TFT/TFD)
Display Refresh	?	?	60 Hz	60 Hz	60 Hz
Battery	1,000 mAh	950 mAh	1,730 mAh	2,450 mAh	1,750 mAh
Processor	?	?	1.2 GHz Qualcomm Snapdragon S3 MSM8660 (dual-core)	2 GHz MediaTek Helio A22 (MT6761V)	1.4 GHz Qualcomm Snapdragon S2 MSM8655
RAM	?	?	?	3 GB	1 GB
Storage	? raw hardware	? raw hardware	? raw hardware	32 GB	4 GB
Main Camera	Yes	3 megapixel	5 megapixel	8 megapixel	5 megapixel
Wide Camera	-	-	-	-	-
Tele Camera	-	-	-	-	-
Video Capture	-	QCIF (176 x 144)	720p HD	1080p HD	720p HD
Front Camera	-	-	1 megapixel	5 megapixel	1 megapixel
Weight	3.35 oz (95g)	4 oz (113g)	6 oz (170g)	5.51 oz (156g)	3.4 oz (96g)
Dimensions	3.53" x 1.76" x 0.93" (90 x 45 x 23.6 mm)	3.84" x 2.02" x 0.69" (98 x 51 x 17.5 mm)	4.96" x 2.56" x 0.47" (126 x 65 x 11.9 mm)	5.88" x 2.82" x 0.35" (149 x 72 x 8.9 mm)	4.83" x 2.48" x 0.47" (123 x 63 x 11.9 mm)
Form Factor	Clamshell	Clamshell	Slab	Slab	Slab
Platform / OS	(proprietary)	(proprietary)	Android	Android	Android
Network Bands	CDMA: 850, 1900 AMPS: 850	WCDMA: 1, 2, 5 GSM: 850, 900, 1800, 1900	4G WiMAX: 41 CDMA: 800, 850, 1900	4G LTE: 2, 3, 4, 5, 7, 12, 14, 20, 30 WCDMA: 1, 2, 4, 5, 8	CDMA: 800, 850, 1900
Data Technology	1xRTT	HSDPA 3.6	WiMAX	LTE (Cat 4)	EVDO rA
Features
Flashlight	-	-	-	Yes	-
GPS / Location	Yes	Yes	n/a	n/a	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)	Yes M4 (very compatible)
Multiple Languages	Yes	Yes	n/a	n/a	n/a
TTY/TDD (Digital)	Yes	Yes	Yes	-	Yes
Alerts
Extra Display	Yes	Yes	-	-	-
Ringer Profiles	-	Yes	-	-	-
Connectivity
Bluetooth	-	Yes	Yes	Yes	Yes
Mobile Hotspot	-	-	n/a	n/a	n/a
USB	Yes	Yes Micro-USB	Yes Micro-USB	Yes USB Type C	Yes
Wi-Fi	-	-	Yes 4 (802.11 b,g,n)	Yes	Yes 4 (802.11 a,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	-	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	n/a	n/a	n/a
Data & Network
Data Tethering	-	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
Touch Screen	-	-	Yes Capacitive	Yes Capacitive	Yes Capacitive
Memory
Memory Card Slot	-	Yes	Yes	Yes	Yes
Messaging
Email Client	-	Yes	n/a	n/a	n/a
Instant Messaging	-	Yes	n/a	n/a	n/a
MMS	-	Yes	n/a	n/a	n/a
Text Messaging Templates	-	Yes	n/a	n/a	n/a
Music
FM Radio	-	-	Yes	-	-
Headphone Jack (3.5mm)	-	-	Yes	Yes	Yes
Music Player	-	Yes	n/a	n/a	n/a
Photo & Video
DLNA	-	-	Yes	-	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
Voice Memo	Yes	Yes	n/a	n/a	n/a
Software
Games	Yes	Yes	n/a	n/a	n/a
Java (J2ME)	Yes	Yes	n/a	n/a	n/a
Voice
HD Voice	-	-	-	Yes	-
Headset Jack (2.5 mm)	Yes	-	n/a	n/a	n/a
Speaker Phone	Yes	Yes	Yes	Yes	Yes
	LG PM-225	ZTE Z331	HTC EVO V 4G / EVO 3D (CDMA)	AT&T Vista	Samsung Galaxy Ring / Prevail 2
	X >	< X >	< X >	< X >	< X

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


Phone	LG PM-225	ZTE Z331	HTC EVO V 4G / EVO 3D (CDMA)	AT&T Vista	Samsung Galaxy Ring / Prevail 2