This is my favourite iOS tip to share with others. Imagine you are using the Safari app on your iPhone or iPad and you have spent the last few minutes scrolling through a lengthy article. You are now at the bottom of the page and want to get back to the top of the page to access the site’s navigation menu. Rather than swiping repeatedly with your finger, tap the clock in the device’s status bar. Safari should scroll to the top of the page in one quick motion.
As mentioned, I usually tap the clock area in the status bar to prompt this action, but tapping anywhere along the status bar should do the trick. This action isn’t relegated to just Safari, either. It should work across the operating system in things like Mail, Music, the App Store, and many third-party apps as well.