Opera browser is just simple and user friendly interface moreover it occupies less space.
it helps in saving mobile data from unwanted advertisement,
first experience with opera is just superb and browsering on opera is just awesome in mobile
while crome n other browsers occupies 20-30 mb to download the file and after install it occupies a space of 70-90 mb
while opera mini is <5mb n after install it occupies hardly 9mb