Hello everyone. This OneRingKiller is only designed for China. The feature is very simple. The default behavior is that once confirmed the call is from FoShan, Guangdong province, the phone will automatically answer, so that the caller will be cost. This software for a friend's friend does not fit in Foshan, please use discretion. This software is only for people with ulterior motives, rather than a pure kind of Foshan people.