Pakistan Telecom News

What are file types?
File name has 2 parts in it. First one is file title and second is file extension. File extension represents file type. For example “computer.jpg” is a complete file name. Word “computer” is file title and after dot “jpg” is extension. Extension “.jpg” represents that this is a JPEG image or photo [...]

the following website can send JPG images on to your mobile for setting them as wallpaper. Its best for the mobiles not having bluetooth/wap services.
Website