Internet mobile streaming traffic has started to dominate the Internet mobile data traffic, and it continues to increase with wider adoption of all kinds of mobile devices. Precisely deliv- ering streaming traffic to mobile devices is not only important to the service providers and the Internet, but also important to mobile devices (battery power wise) and mobile users (mone- tary cost wise). In this paper, through measurement and anal- ysis, we find that there is non-trivial redundant traffic delivered when existing mobile streaming services are accessed on iOS devices. Motivated by the analysis results, we design a mid- dleware that can transparently reduce such redundant traffic. Having evaluated with a prototype installed on Amazon EC2, we find that our solution can completely eliminate such redun- dant traffic without degrading end users’ performance.