If you want to know who’s calling without looking at your phone, you can customize your contacts with special ringtones and vibration alerts. Then it doesn’t matter if it is across the room or in your pocket, you’ll know who is phoning you.As is the case with most things iPhone-related, customizing your contacts is a snap. That said, you will have to make changes to each contact you want to affect, but even if you have dozens or hundreds of contacts, chances are only a few of them actually call…See More