Abstract: Systems, methods, and device are provided for a mobile and landline connection device. One embodiment includes providing a mobile and landline connection device having a landline communication link, a radio communication link, a processor, and a memory connected to one another. The method includes switching a communication connection for a mobile handset between the landline communication link and the radio communication link and transmitting address and contact information from the mobile handset to a landline handset when the mobile communication device is connected to the device.