How to Disable Auto-Correct on iPhone Completely
If you’re fed up with auto-correct on the iPhone erroneously changing words to things you did not intend to type, you can opt to disable the auto-correction feature completely in iOS. Doing away with this feature is not recommended for most users, but choosing to turn off autocorrect can be a reasonable solution for some unique situations where the typo prevention feature is persistently a nuisance or just outright wrong.