HOWTO | ASSIGN VIBRATION PATTERNS TO INDIVIDUALS
1 Choose a contact
Vibration patterns can play in response to more than just broad events. They can be assigned to play when specific people call you or send you a text message. Open the Contacts app, tap on a contact’s name to see their details and then tap Edit. Scroll down the list of data you can set for a person until you come to the Ringtone and Text Tone options.
2 Assign to calls or texts
Notice that Ringtone and Text Tone each have Vibration settings immediately below them, enabling different pattern assignments to be set for the two events. Tap one of them, then tap either one of Apple’s patterns or your own (or you can create a new one from here as well) to assign it to that event for this contact only. Tap Done, then Done again to save your choices.
3 Manage custom patterns
Vibration patterns cannot be assigned using Contacts app in OS X or at iCloud.com, and so there are no shortcuts to assign them to whole groups at once. At the list of custom patterns, you can delete one you no longer want by swiping left on it and tapping Delete. Places where that pattern was used will show as ‘Unrecognised Vibration’ and use a default one.