Install iOS 12.1.4 If Your Kids Use Screen Time
If you and/or your kids use Screen Time, and you skipped iOS 12.1/iOS 12.1.1/iOS 12.1.2/iOS 12.1.3, you'll want to install iOS 12.1.4.
iOS 12.1 added the ability to change or reset your child’s Screen Time passcode using Face ID or Touch ID. This is useful if you're trying to closely monitor how much your child is using an iPhone or iPad.
On top of that, the iOS 12.1 update fixed an issue that could prevent Screen Time from reporting specific websites in the activity report.
If you want the best Screen Time experience, download iOS 12.1.4.