Mobile wireless communications device having a near field communication (nfc) device and providing memory erasure and related methods

A communications system comprising:

• a near field communications (NFC) terminal;
• and
• a mobile wireless communications device configured to communicate with said NFC terminal and comprising
• a wireless transceiver,
• a processor coupled with said wireless transceiver,
• a near-field communication (NFC) device coupled to said processor, said NFC device comprising
• an NFC controller,
• an NFC transceiver coupled to said NFC controller, and
• a first memory coupled with said NFC controller, the first memory configured to store a first plurality of applications for communicating with said NFC terminal;
• and
• a second memory coupled to said processor and configured to store at least one second application;
• said processor being configured to disable said NFC transceiver based upon a security condition, disable access to the first plurality of applications, erase the at least one second application, perform a reset operation, and erase the first plurality of applications from said first memory after the reset.

A communications method for a mobile wireless communications device comprising a wireless transceiver, a processor coupled with the wireless transceiver, a near-field communication (NFC) device coupled with the processor and comprising an NFC controller, an NFC transceiver coupled with the NFC controller, and a first memory coupled with the NFC controller and configured to store a first plurality of applications, the mobile wireless communications device also comprising a second memory configured to store a second application, the method comprising:

• using the processor to disable the NFC transceiver based upon a security condition;
• using the processor to disable access to the first plurality of applications;
• using the processor to erase the second application;
• using the processor to perform a reset operation;
• and
• using the processor to erase the first plurality of applications from the first memory after the reset operation.

A non-transitory computer-readable medium for use with a mobile wireless communications device comprising a wireless transceiver, a processor coupled with the wireless transceiver circuitry, a near-field communication (NFC) device coupled with the processor and comprising an NFC controller, an NFC transceiver coupled with the NFC controller, and a first memory coupled with the NFC controller and configured to store a first plurality of applications, the mobile wireless communications device also comprising a second memory configured to store a second application, the non-transitory computer-readable medium having computer-executable instructions for causing the mobile wireless communications device to perform steps comprising:

• disabling the NFC transceiver based upon a security condition;
• disabling access to the first plurality of applications;
• erasing the second application;
• performing a reset operation;
• and
• erasing the first plurality of applications from the first memory after the reset operation.