Abstract:With the continuous development of Android system, the Android system has been used in a variety of devices, including applying to wire telephones. Therefore, we need to develop a contact which has the real-time synchronization function between wire telephone and mobile phone equipped with Android system. The contact establishes connection between client and server by using Socket, and using Handler mechanism to send data and read data, as a result, it realizes the function of the real-time synchronization for contact data. The test shows the contact achieves the goal of the real-time synchronization function of calling records, adding, modifying and deleting contacts between mobile phone and wire telephone.