This fixes a bug where the SIM enable checkbox was showing the
wrong state. The code now registers for state changes and updates
the checkbox state appropriately.
Change-Id: Icd4f040140e9f71e75e288968ee7ae616dfd08ce
In security setting, if user change orientation during entering
pin code, the change will not apply successfully, it is because
the entered pin codes has not been saved and restored when
application was re-create after changed orientation. So we save
entered pin codes and restore them in onCreate when application
is re-created.
Change-Id: Ia8a3fb3ee75185ce028104487377e47f272905ce
