1. A system comprising: a number recognition module to process image data defining a digital picture captured with an onboard camera of a mobile telephone device and including a visual representation of a telephone number, to recognize the telephone number based on the visual representation thereof in the digital picture; a location estimator configured to estimate a location of a destination telephone device that corresponds to the recognized telephone number; and a call forwarding module configured to: determine that the recognized telephone number is deficient for initiating an automated call forwarding arrangement; determine, based on the estimated location of the destination telephone device, one or more supplemental codes applicable to the automated call forwarding arrangement; compile an effective destination telephone number by combining the one or more supplemental codes with the recognized telephone number; and initiate, based at least in part on the effective destination telephone number, the automated call forwarding arrangement to automatically redirect to the destination telephone device future calls made to the mobile telephone device.