Remember November's infamous iOS "i" bug, which autocorrected the letter "i" to an "A" with a strange question mark icon? It was annoying and resulted in far too many typos to count, but it wasn't completely destructive ? you could still send messages and access your apps. Now, however, there appears to be a far worse iOS bug that renders iPhones running the latest software, iOS 11.2.5, all but useless. If you receive a text with a single...