iPhone 6 iOS 12.5.2 Update: What's New
The iPhone 6's iOS 12.5.2 update is tiny and doesn't come with any known bug fixes or features. Instead, it's focused on security.
Apple's security site highlights the single change on board the new software. If you're interested in the particulars, you can read more about it on the company's website.
We'll let you know if we learn more about the software's changes.