Nomophobia

Fear of being away from a mobile phone

No-mo-pho-bia (\\,nô-mə-`fô-bç-ə\\) noun : an exaggerated, inexplicable, and illogical fear being without a mobile device, power source, or service area.

Origin: Dubbed by British experts who claim that state that fifty-three percent of mobile users, with forty-eight percent women and 58 percent of men questioned in their study admitted to experience feelings of anxiety when they run out of a battery or credit, lose their phone, or have no network coverage.

The fear of being out of mobile phone contact, hence NO MObile phone contact

Short for no-mobile-phone phobia, this is the constant fear of not having service and according to researchers in the UK a whopping 50% of people have it. Third world…we apologize.

A phobia where people have a rational fear of having their mobile phone not with or taken away from them.
This word was invented in the year 2008 be a research company in the U.K. named "YouGov" an internet market research company.

Something most people have nowadays, the fear of losing cell phone service

Fear of being away from a mobile phone.