Accidental app deletion is common on shared iPhones. A child or older family member may long-press an icon, tap a menu item, and remove an app without realizing what changed.
The problem is not only reinstalling the app. Some apps require sign-in, setup, permissions, or restored preferences before they feel normal again.
Before sharing an iPhone, it can help to restrict app deletion and review other sensitive controls such as installation, account changes, and date or time settings.
iPhone Locker brings these system control ideas into a shared-use workflow, helping the phone remain stable while someone else is using it.