With this Desktop Phone and Stand for Smartphone you can turn your smart phone into an office desk telephone by docking your smart phone and connecting a headphone jack. Calls can be answered and terminated using the handset just like a traditional wired phone. many of us have cut the cord and let go of the regular telephone lines. this clever device replicates a desk phone using your cellphone as the connection. It can accommodate an iPhone, Samsung Galaxy S3, S2 and other smartphones with 3.5 mm Headphone Jack. the cellphone screen stays on while you talk on the phone. This is a great feature as sometimes you need to press numbers for automated answering systems and still keep the handset close to your ear.