Does libimage-magick work at all in iOS/Android? At Facebook's scale, the choice of whether to resize/crop/compress images on devices or at the backend must be

Does libimage-magick work at all in iOS/Android? At Facebook's scale, the choice of whether to resize/crop/compress images on devices or at the backend must be a complete no-brainer. Why would you stand up additional datacenters instead of just burning a little more of your user's (your "product's"?) battery?