We've all been there. Your phone's on silent, trapped in the dark clutches of your jeans pocket. It's ringing, but your current surroundings mean you'll need to expend a great deal of effort in extracting it, or that you might cause offence in doing so.
If only you had some way of working out who was calling you from the pulse being set off by your handset... oh wait, there totally is.
Sure, custom vibrations have been around ever since iOS 7 launched - but have you ever had a poke around to actually make use of this brilliant silent feature?
Here's how to set different pulses for all manner of alters.