The phone is one of the most used devices in our daily life. Everyone has at least one to receive calls and messages on the phone. to phone number needs. Thanks to these telephone numbers we can receive calls, receive calls and send messages.

In addition to these three basic functions, mobile applications require a phone number for verification, even during registration. Basically, these phone numbers starting with 10 digits part of our life seems to have become. Have you ever thought about why they have 10 digits before? Let’s see why together.

When phone numbers first appeared, they were replaced by numbers. It started with names.

The person’s name first two letters it was usually written in capital letters and was an example of the numbers of the phone numbers on the phone dial. To understand this alphanumeric system, open the search section on your phone and you will see the letters ‘M,N,O’ under 6 and ‘T,U,V’ under 8.

To give an example of such phone numbers, let’s take a scene from the sitcom I Love Lucky, which was shot in recent years. In pictures in a scene Murray Hill 5-9975 phone number appears. This Murray Hill 5-9975 phone number in the scene actually corresponds to 68 5-9975.

This system is for people who want to make calls; letters confuse because of similaritiesproliferation of wrong calls, number and name few combinations because it has been removed. In the following times, it was gradually passed to 10-digit numbers.

Now let’s see why 10-digit numbers are used:

Indirect population growth caused this situation.

As the world’s population is constantly increasing, the number of mobile phone numbers available must exceed the number of phone users. If we take India as an example, the current population of the country is 1,367,938,326 according to the United Nations report calculated in 2019. The population is expected to increase to 1.7 billion by 2060, so existing phone numbers more than population It should be.

Permutations and combinations Let’s dive into 10-digit numbers.

How many single digit numbers do we know? Answer 10. How many different number combinations are there if the telephone numbers consist of 2 digits? 10×10=100 grains combination occurs. Likewise, how many combinations would there be if phone numbers were 9 digits? answer 1 million combination. Now let’s find the combination of 10-digit numbers. This is us 10 billion It offers different combinations. This combination doesn’t seem easy to overcome with phone numbers.

Do all countries use 10-digit phone numbers? Answer is no

Using 10-digit numbers of all countries no obligation. Usually these numbers are by population differs. 6-digit phone numbers are used in the island of Niue in Oceania, which is home to 1,620 people, according to 2018 data. Technically, the 6-digit combination seems to be enough for them.

China, on the other hand, has a huge population and therefore needs more phone numbers. For this reason in China up to 12 digits phone numbers are used. Based on this situation, India which has a large population may switch to 11 and 12 digit numbers in the future.

In addition, numbers starting with 555 are preferred for movies in America. And why?

If you’ve seen the Ghostbusters movie starting with 555 You will see a number appear. This is present in many American movies and TV shows. In the story of the production, if a phone number has to be given, a number that starts with 555 appears directly in front of us.

The answer to this situation is simple. Numbers starting with 555 in America does not work, That’s why these numbers appear in movies and TV shows. If a big fan wants to call all the time, that’s it. can’t reach numbers. In addition, the 555 was a switchboard combination not commonly used in the American telephone system.

What do you think about using 10-digit phone numbers?

Sources: Numberbarn, Talkroute, Science ABC, Pritesh Pawar, Business Insider