The Main aim for developing this project Mobile Phone Billing System for telecommunication service providers for improving efficiency in billing procedure. This project Mobile Phone Billing System is to manage the details of Connections,Bills, Customers, Payments, Terrifs. It manages all the information about Connections, Connection Types, Terrifs, Connections. This system is very helpful for easy to calculate users billing details and managing customer billing details by providing call details and cost for the every call user called from his mobile. This project is developing to increase speed of billing system, bill calculation and report generation. The purpose of the project is to build an application program to reduce the manual work for managing the Connections, Bills, Connection Types, Customers. It tracks all the details about the Customers, Payments, Terrifs. The project Mobile Phone Billing System project is a web based application to assist mobile phone users to access the information of different bills, send and receive queries requested by user from anywhere and in anytime.