iphone zone
When someone's attention is completely absorbed by whatever is happening on his or her iphone. Texting and apps such as Words with Friends may lead to a particularly impenetrable iphone zone.
Alex: Hey
Eric: ...(no response)
Marty: dude, don't worry about it. Eric is always in the iphone zone
Eric: ...(no response)
Marty: dude, don't worry about it. Eric is always in the iphone zone