@Albert, the bq hardware seems to be a bit special in that it turns off the modem completely in flight mode and loses the unlocked state. Ubuntu touch itself doesn't require to re-enter the sim pin after flight mode. On the nexus 4 for instance, the SIM card stays unlocked.
** Tags added: bq -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1436724 Title: No prompt to unlock sim after airplane mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/indicator-network/+bug/1436724/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs