If you type the letter “i” and it autocorrects to an “A” with a symbol
I really feel like iOS 11 was released 6 months too soon. Apple really messed up with this one. I run into strange bugs daily. Sometimes apps just freeze for 10 or so seconds and then come back. Or apps won’t launch at all. Sometimes the problems go away or I have to reboot. I really hope they can put out some patches quickly to fix this mess.