Apple released a bug fixing update to the public today, addressing issues including unresponsive touch input with third-part replacement displays.
The primary note for the iOS 11.3.1 update states that it “improves the security of your iPhone or iPad and addresses an issue where touch input was unresponsive on some iPhone 8 devices because they were serviced with non-genuine replacement displays.”
Further notes on the security content of the update reveal fixes related to memory corruption issues and spoofing issue in the handling of URLs. Find the full list here.
iOS 11.3 was released in late March. Apple is running a developer and public beta version of iOS 11.4, which will likely release to the general public in May or early June.