I would like to be blunt with this topic. While you are driving a vehicle, you need to be focusing ONLY on driving. Put your $!@#&$! cell phone in your glove box/pocket/purse and ignore it! Is your social life worth increasing the risk of being in a crash by more than if you were driving drunk??? The text will still be there when you reach your destination. If the phone call was so important the person will have left you a message.
It seems, for the majority, the only way to drill this into their heads is for them to be in a crash and end up hospitalizing or killing someone. Then they realize how stupid and short sighted they have been worrying about their lame social life and putting it above the safety of everyone else around them. If it's that important to you, do the rest of us a favor and hire someone to drive you around, only use public transportation, or call for a taxi for all your traveling needs.