iOS 12.3.1 Update for iPhone & iPad Released [IPSW Download Links]

Apple has released iOS 12.3.1 as a bug fix software update for iPhone and iPad, with no major features or changes to be expected.
The iOS 12.3.1 software update does include a few helpful bug fixes, specifically aimed at resolving an issue with making and receiving VoLTE phone calls on iPhone, fixing a problem where unknown Messages senders would not be filtered if the unknown sender filtering feature were enabled, and resolves an issue where the Report Junk / spam iMessage button was missing from some Messages. The full release notes accompanying the download of this update are included below.
















