at first know the Resolution pixels of ur cellphone Screen (for ex: 300X400) and transform ur wallpaper to its size and then u can keep it as wallpaper in ur cellphone www.amazinghdwalls.co.cc
300x400mm = 120000mm 1cm = 10mm 1in = 2.54cm 120000mm x 1cm/10mm = 12000cm 12000cm x 1in/2.54cm = 4700in (Rounded to two significant figures.)
Metadata are data about data. There are two kinds of metadata: "data about data content", and "data about data containers". Consider a file with a picture. The picture or the pixels inside the file are data. A description of the picture, such as "3 cute kittens, April 2012" are "data about data content", a kind of summary of the data. A description of the picture, like "JPEG format, 300x400 pixels", are "data about data container", because it describes how the contents of the file are stored, although they are not the actual data. A library card catalog contains "data about data content", a kind of summary of the data - the author, the time of creation, etc.