Mobile browsers come in many varieties with various bugs and inconsistencies that make them more interesting to work with than desktop browsers. There are over a dozen mobile browsers across different operating systems like Android, iOS, Blackberry and Windows Mobile. They handle layouts, zooming and backwards navigation in different—and sometimes buggy—ways. It is best to test websites on actual mobile devices rather than emulators due to inaccuracies. Media queries can help develop responsive designs for small screens.