She said the discovery, which she shared in a tweet that soon went viral, was akin to striking iPhone gold.
"I thought I was an idiot for never having discovered this gem myself," she told BuzzFeed News. "My mind was blown. Literally."
For Brierre-Davis, the iPhone trick is going to make fixing typos way simpler.
"I could never get the cursor to go where I wanted," she said. "I’ve even deleted a full sentence just to avoid having to go back and change a mistake in a word."