The fact that it won’t have any record of calls I missed while the phone was off or didn’t have reception, although actually that’s probably the fault of the service provider. They can send me texts I missed. Why can’t they send me a list of missed calls?
Nothing can fix things because teenagers will not cooperate. If Instagram could identify all its teenage users, those users would move to a platform that couldn’t. The only thing the restrictions achieve is a reduction in the market share of the platform with the restrictions.