So you’re writing on your iPhone, you’re at the bottom of a long document and you want to get to the top as quickly as possible. You could scroll up by swiping your finger at the screen, but a long document takes time to scroll through.
You can jump to the top of a document instantly by tapping the status bar. That’s the grey bar with the time and battery status at the very top of your screen.
This tip also works for long webpages in Safari.
There’s no official way to jump to the bottom of a document. Keep checking this blog, and I’ll let you know if Apple add that feature.