Every time I text my girlfriend, and put two x’s at the end like this:
Xx
My iPhone feels it necessary to replace it with “Fx”
Apparently the software learns what you want after a certain amour of corrections, however after literally hundreds, my iPhone still does it!!

許・美美: May I just say that you sir, are a genius? *u*;;; I never really un...
Yassir: Thanks. That's how posts should be, straight to the point....
Atiya: Well done! it worked for me too :)...
Abbie: Absolutely brilliant. Thank you....
Fernando: Thanks to publish this, works for me. :)...