The iOS 11.3.1 update is a minor change to the mobile operating system, fixing a number of small issues. The main change of the update is it addresses a reported problem where some iPhone 8 devices become unresponsive to touch-based inputs, with the primary group affected being handsets that underwent servicing with third-party replacement displays.
The touch functionality issue started after the release of iOS 11.3, with the update reportedly causing thousands of iPhone 8 devices with aftermarket screens to stop working properly.
The update, weighing in at 49.5 megabytes, can be downloaded from the Settings app under General, then Software Update.
At QCQ Repair we only use high quality parts, but it’s good to know that Apple is addressing these issues for its customers.