You can check to see if your iPhone is unlocked from a carrier using any of a few different methods.
It's easy to see old notifications on an iPhone in the Notification Center, which you can open with just one swipe. Here's ...
in iOS 26 and iPadOS 26, the default for the Wired Accessories setting is to Automatically Allow When Unlocked. You can change this. Here’s how. Scroll down until you find the Security section. Tap ...