Apple has addressed the autocorrect bug found in iOS 11.1 keyboard, with the public release of iOS 11.1.1 today. The over-the-air update is now available for iPhone and iPad.
The keyboard bug that turned the letter “i” into the letter “a” and a strange symbol is now fixed. Now you can normally write ‘iPhone’ on your iPhone, again. Besides the autocorrect fix, the iOS 11.1.1 firmware update also resolves an issue where Hey Siri stops working. That’s pretty much for this minor yet very important over-the-air fix, according to release notes.
You can grab the iOS 11.1.1 software update now from Settings > General > Software Update on your iOS device.