Telephobia of course.
making a phone call
Yes, the phobia of not having a mobile phone is real. It has only recently been added to the official phobias list.This phobia is called Nomophobia.
Tropophobia is the name of the phobia related to the fear of moving or making changes
A phobia of small spaces is called claustrophobia.
There does not seem to be a specific phobia for leaving the phone off of the hook. There is a phobia of phones that is called phonophobia. This caused people to fear answering or handling phones.
When making a phone call, you may get a message cancelled message. This means something happened in the transmission of the message and it did not go through.
To make a station-to-station call on this phone, you need to dial the phone number of the station you want to reach and wait for the call to connect.
Ntomataphobia
From what I understand there is no specific phobia for people who are afraid of mail. Most just call it Mail Phobia...
Yes, this fear does exist and it's a relatively new one.The phobia of not having a cell phone is called Nomophobia.
Gigantasophobia is the fear of tall people.
The most common way of making a phone call in 2013 is by using cellular telephones. Most phone calls are now VoIP (Voice over Internet Protocol) in terms of the the information is transmitted to each phone.