A global cross-carrier system for distributing mobile data. A sharer utilizes a mobile application to access the data share server to enable sharing of any unused data in the sharer's data plan with a wireless network carrier. A borrower associated with another carrier can utilize a mobile application to access the data share server to enable borrowing of any available data shared by other users. A data share server might optionally purchase data from one or more carriers, the one or more carriers need not be located within the same country. The sharer has an option of purchasing a data plan from the data share server. A borrower has the option of purchasing on-demand data in the form of a session if there are no sharers in the data pool.