The international release of this phone (HTC Butterfly) has a microSD slot, so I think VZW had something to do with this. Funny how VZW takes away unlimited data, but simultaneously pushes cloud storage and streaming. Though I'm not complaining, I don't download 2GB monstrosity games or store more than ~4GB of media on my device (all music, no movies). Though keep in mind "16GB" is really more like 11-12GB. If you're diligent about what you store--e.g. migrating pics to cloud storage--16GB is plenty.