Galaxy users have been requesting a built-in app lock for years. Samsung fridges have App Lock before Galaxy phonesWhat makes this rollout surprising is where it landed first. Despite being one of the most basic security utilities people expect on a smartphone, native App Lock isn’t yet available on Galaxy phones. Meanwhile, Galaxy phones run One UI atop Android OS, which has its own app permission systems and Google-led restrictions that may complicate the direct integration of an App Lock feature. With those giant appliances now getting App Lock, we hope the company has the tool in the pipeline for phones too.