A kiosk for vending and reverse-vending of mobile electronic devices. The kiosk includes a case that defines an inner compartment configured to store mobile devices for vending. The case includes a front panel and a user interface is positioned along the front panel. The kiosk includes a vending bay and a storage bay configured to receive user mobile devices. The kiosk includes a diagnostic cable wire harness configured to be accessible at the storage bay. The kiosk includes a computing device having a communication element configured for communication with at least one carrier server for service activation and/or de-activation.