OMG, yes!

I had to borrow my husbands phone yesterday (swapping out my old phone, but first I had to do back up, first time in. like forever, with a zillion photos...)I had some texts that I couldn't wait to send. The spellcheck changed several correctly spelled words to other words that entirely changed the meaning of my text. At least 2 times, it corrected my correction of ITS correction.

When my new phone is all set up, first thing I do - always - is disable spellcheck.

And ... edit. Maybe that's why the spellcheck did that to me - It KNOWS I'm always taking it off of my phones (creepy music)