A method, system and medium are provided for receiving an incoming call on a target wireless-telecommunications device. A secure communication path is established between a primary device and a nonprimary device, and a proximity-based relationship is created between the primary device and the nonprimary device. The primary device has associated with it a set of user credentials and a set of hardware credentials. When the nonprimary device comes within a threshold proximity of the primary device, the primary device automatically communicates the set of user credentials and the set of hardware credentials to the nonprimary device thereby activating it so that it can receive an incoming call. The primary device is deactivated so that a wireless-telecommunications-network subscriber can only receive an incoming call on one device at a time.