Peace of mind for parents and guardians, but is this the right way?
During critical incidents like emergency (a 911 call can be placed) or a lost phone (a call to pre-approved numbers can be placed, presumably family members) the phone still works.
However, what if this were cheated? A mischievous friend playing a prank, a controlling or mistrustful significant other, a hacker locking your phone until you give over personal information?
What if the teen simply stopped using their phone out of defiance? That may worry a parent a lot if there was no response at all for days, more so than if they didn’t have the locking app.