Cyber security refers to protecting computers, networks, programs and data from unauthorized access, change or destruction. With the wide adoption of smartphones, a lot of sensitive information can be cleaned from users' interaction with their smartphones and tablets. In our previous effort, we have developed a type of charging attacks called juice filming attacks, which can sniff smartphone users' information when they are interacting with their phones during charging. With the increasing number of public charging stations, we notice that this type of charging attacks may become a big threat to compromise users' privacy. In this work, we propose a framework of collecting smartphone information in large-scale based on juice filming attacks. Then, we show that such charging attacks work well not only on Android phones, but also on the newly released iPhones. Our work points out that the proposed framework is feasible to threaten users' privacy in practice.