Whether you’re hitting a “Content Restricted” message, a workplace firewall, or a country-level block, iPhones have multiple layers that can prevent access to certain sites. This guide walks through every possible method—from simple settings toggles to VPNs and DNS changes. 1. Check iOS Screen Time & Content Restrictions Apple’s Screen Time includes web content filters that are often enabled without users realizing it (e.g., on a family-shared device or a managed work phone).