You probably know that you can set custom ringtones for different contacts on your phone, but did you know that you can set custom vibration patterns for them, too? As long as you have an iPhone running iOS 7, you can easily set this up and know exactly who’s calling you without looking at your phone. To try it out, go into your Contacts and pick someone you want to set a custom vibration for. Tap Edit, scroll down to Vibration and tap Default. Here, you can choose from a handful of preset vibration alerts, like ‘Heartbeat’ or ‘Symphony.’ If you want to set up your own tone, tap ‘Create New Vibration’ at the bottom. This is where it gets pretty cool. A meter starts rolling at the bottom. Tap or hold your finger on the screen to create the pattern you want. Play it back, and if you like it, save it and name it. Now you’ll know when to answer your phone – or let it go – even without having to look.