The Apple today released an update for iOS 12.3.1 for all iPhones, iPads and iPad supported. As its name suggests, this update is not large, but it is a Updated branch of my aims in fact to fix a bunch of errors.
In the beginning, comes this update to fix a bug linked to the talks VoLTE. Specifically, there was a problem can prevent making or receiving these calls. I got the Messages application Messages on the reforms further, it has been fixed a problem that lead to the appearance of messages from unknown senders in the list of your conversations even if the option Filter Unknown Senders is enabled, while also fixing the problem that prevents Report Junk from appearing in a series of messages sent from senders not known.
That’s all. Although it is not a major update, but it still need to install it as soon as possible, especially if you are affected by one of these errors such as the inability to use VoLTE, or receive a lot of unsolicited messages from unknown senders.