Nomophobia

n. Short for no-mobile phobia, its the anxiety produced by losing cell phone contact, for lack of coverage or power. A recent survey in the UK estimates that half of its citizens are afflicted. The condition is said to be as stressful as a root canal.

...I've never had a root canal. A handful of my friends point their fingers at me for being on my phone a lot, but I think its safe to say that if that phobia is as painful as a root canal, then a root canal doesn't sound all that bad.