Automated cost reduction while using multiple SIMs in a single mobile device

According to statistics, the number of active Android device user is approximately two billion and 25% of Android devices are dual SIM(Subscriber Identification Module) supportive throughout the world. For this huge number of dual SIM users, it is quite difficult to remember which SIM package offers the cheapest rate for calling. In this study, we propose an automatic cost reduction application which assists in reducing cost of outgoing call by selecting the best available SIM. This app selects the best cost-effective SIM and automatically transfers call to the particular SIM. If the selected SIM does not have enough money for calling, the call is automatically transferred to the other SIM. Our app is an approach towards saving the additional amount of money that is being spent by the dual SIM users. User evaluation of partial implementation of our system confirms around 45 percent saving of money while using this app.