After updating to Lollipop 5.1.1 yesterday (which was very overdue, so no complaints about finally getting the update) my Xperia Z3V stopped receiving or sending SMS. I've tried several different apps, and some—such as Hangouts—will send SMS but any of the texting-specific apps such as the stock Sony Messaging app will not. I've tried rebooting, removing and then reinserting the SIM card, uninstalling and then reinstalling the apps, and nothing has worked.