Auto-Correction only improves with time, but after 15 years of continuous development by Apple, it's still nowhere near perfect on the iPhone. However, a few hidden features in iOS can help avoid or mitigate future autocorrect failures, one of which warns you every time it's about to make a word change. It may come as a shock to you, but the little-known feature I'm talking about has been around since iOS 3 in 2009. That's before iOS was even called "iOS," when Apple used the longer "iPhone OS" for its mobile operating system. The secret tool remains in place in iOS 15 and will likely be... more