Mobile deep packet inspection (DPI) is a technique used to monitor the data traffic in mobile applications. As a business model evolves in which data services become more important than voice for revenue generation—and in which the network is upgraded to Long Term Evolution (LTE) and becomes Internet Protocol (IP) end-to-end—the ability to perform traffic shaping, and perhaps blocking, becomes important.Mobile DPI can be a stand-alone network element, or part of existing network elements.