Taken from SXSWBaby.com:
[SXSW Music schedule for iPhone](http://sxswinfo.com/)
[SXSW Interactive schedule for iPhone](http://robballou.com/sxsw/)
[SXSW general information for iPhone](http://sxswbaby.com/index.php/iphone/)
[
Twitter for mobile users](http://m.twitter.com/login)
And I am most likely going to use [sched.org](http://sched.org/) which is designed for people like me, going for all 3 conferences – Interactive, Film and Music!