At block 304, the UE may determine whether the UE has detected a power cycle. In various embodiments, the UE may detect the initiation of a power down operation. Alternatively or in addition, at block 304 the UE may detect a power up operation. In response to either of these power cycle conditions, the UE may, at block 308, clear, reset, and/or otherwise delete one or more (e.g., all) entries in its listing of barred TAC and frequency band combinations. If the UE does not detect a power cycle at block 304, the UE may continue to maintain its UE barred list.
Alternatively, or in addition, at block 306 the UE may determine whether the UE has detected an airplane mode condition or condition change. In various embodiments, the UE may detect when the UE enters “airplane mode” or another condition where wireless communications are disabled (e.g., in response to detecting an instruction to enter such a condition). Alternatively or in addition, at block 306 the UE may detect when the UE exits “airplane mode” or another condition where wireless communications are disabled (e.g., in response to detecting an instruction to exit such a condition and/or enable wireless communications). In response to either of these airplane mode conditions, the UE may, at block 308, clear, reset, and/or otherwise delete one or more (e.g., all) entries in its listing of barred TAC and frequency band combinations. If the UE does not detect an airplane mode condition or condition change at block 306, the UE may continue to maintain its UE barred list.