We have to admit, we did not know about this one. Click to see a bunch more very handy tips in this video.
We never knew about this, but it's quite handy. Press "Call" on your iPhone in the phone Keypad dialling screen and it uses the last number you called. No need to go into your "Recents" menu.
The tip comes from tech commentator David Pogue in this great video below. Some of the tips you'll know about, others might be new to you.
There's even one for PowerPoint presentations - watch David in the video to see them all …