With boost you don't really need to sign up for the data plan, OperaMini works without it. Though the one thing that sucks is that you can't download ringtones or wallpapers using OperaMini, well atleast not with mine because it needs to use the regular BB browser to download content(ringtones, wallpapers etc...) and my bb doesn't have the regular browser. Though I still don't think it would dl anything if I did have it.