Android various screen resolutions (VGA, HVGA, QVGA, WQVGA, WVGA, FWVGA) detailed

VGA: Video graphics Array, that is: Display the drawing matrix, equivalent to 640x480 pixels;
HVGA: Half-size VGA, that is: half of the VGA, the resolution is 480x320, like the Samsung Galaxy S5830 is the use of this resolution ;
QVGA: Quarter VGA, that is: VGA One-fourth, the resolution of the video, generally used for small-screen mobile phone like Samsung's furious mini S5570 is the use of this resolution ;

WQVGA : Wide Quarter VGA, that is: expanded QVGA, higher resolution than QVGA, lower than VGA, generally: 400x240,480x272;
WVGA : Wide Video Graphics Array, that is: enlarged VGA, resolution of 800x480 pixels, Like the Samsung I9000 is to use this resolution ;

FWVGA : full Wide VGA, A digital product screen material, another form of VGA, higher than the WVGA resolution, alias: Full Wide VGA, with a resolution of 854x480 pixels (16:9).

Here are some common resolutions

Standard screen	Resolution	Widescreen	Resolution
QVGA	The	WQVGA	400x240
Vga	640x480	WVGA	800x480
SVGA	800x600	WSVGA	1024x600
XGA	1024x768	WXGA	1280x768/1280x800/1280*960
SXGA	1280x1024	wxga+	1440x900
sxga+	1400x1050	wsxga+	1680x1050
UXGA	1600x1200	WUXGA	1920x1200
QXGA	2048x1536	WQXGA	2560x1536

Android various screen resolutions (VGA, HVGA, QVGA, WQVGA, WVGA, FWVGA) detailed