Every so often when I'm typing a text message the letters CB appear in the middle of the text. I don't think I hit any keys by accident (I type with one finger). This question was asked in 2019 but the only answer suggest a phone reset, which I don't want to do. I have an iPhone 12 with IOS 16.4.1. It's not critical that this is resolved but it sure as heck is annoying.
iPhone 12, iOS 16
It sounds as if you might be triggering a text replacment. Go to Settings>General>Keyboards>Text Replacement and see if some combination of letters is set to produce "CB".
Good suggestion but the only text replacement is OMW for 'on my way'. Thanks though! I didn't know text replacement was an option.
Sorry that wasn't the answer. Unfortunately, I have not other bright ideas. Hopefully, someone else will stop by with something.
Best of luck.
Phantom 'CB' when typing text messages
