Abstract: Method and system for optimizing the process of initiating a phone call (call placement) on a mobile phone wherein the call routing is monitored and managed through the Internet. A mobile phone user is connected to a dedicated web server with a user-friendly interface that gathers predefined user's identification parameters, in particular: the user's location, the user's phone and subscriber numbers, the destination phone number, and various details that may be applicable to the specific user and the specific mobile network. Then, the most cost-effective (in call rates terms) or most quality-effective (in voice quality terms) option is selected automatically (or semi-automatically). The system then creates the most efficient configuration (call-through, call-back or a mixed configuration thereof) between the user's mobile phone and the destination phone.