A mobile communication device certification system is disclosed comprising a mobile communication device including a device client that detects and transmits device side events to a certification application. The system also comprises one or more servers comprising a network client and the certification application. The network client detects and transmits network side events associated with the mobile communication device to the certification application. The certification application receives and analyzes the device and network side events, corroborates at least one device side event based on at least one network side event, determines and stores mobile device events in a data store based on the analysis and corroboration, receives an unlock request after resale of the mobile communication device, accesses one or more of the mobile device events responsive to the unlock request, and sends an unlock command to the mobile communication device based on the accessed mobile device event(s).