Opera Mobile (Opera's much more comprehensive browser) isn't and for the same reason Firefox and Chrome aren't: Apple iOS ban on third-party interpreters of dow

Opera Mobile (Opera's much more comprehensive browser) isn't and for the same reason Firefox and Chrome aren't: Apple iOS ban on third-party interpreters of downloadable code (in the case of a browser, JavaScript). On iOS, the third-party browsers that are available are crippled (no client-side JavaScript unless you use Apple's implementation). And even those crippled browsers, like Opera Mini, can't be set as the default browser (e.g. for when you click on a link in an email).