There are situations when they called you, for good reason you could not pick up the phone, and the number on the screen is unfamiliar. You are curious who called, but it is not possible to call back, because everyone has heard about fraud with calls and, as a result, the disappearance of certain monetary amounts from the account.
You will need
Guidelines for defining dialing rules, a detailed listing of incoming numbers.
Instruction manual
1
First, consider the general rules for dialing, when you know the basic information, it will be easier for you to navigate to find out where the call is from. When dialing an international and long-distance number from a landline phone, you need to make the following dialing: 8 - dial tone - then city code - and phone number - for long-distance connection and 8 - dial tone - 10 - country code - city code - phone number.
2
After analyzing this information, you can easily determine the territorial affiliation of the call to your home phone. When calling to a cell phone number for intercity dialing, use the combination +7 - city code - phone number, for international calls dial + country code - city code - phone number.
3
Now that the basic combination of numbers is known when dialing a number, let's move on to determining the country code. In any telephone directory or on the Internet we find a list of telephone codes of countries, referring to the dialing scheme indicated above, we determine the country or, similarly, the city from which they called.
4
There are times when the caller has hidden his cell phone number. Often hide numbers in order to extort, rally or intrigue a person. There is a way to calculate a joker - this is the system of the automatic customer service, its number is 0880. Contact the number indicated, the automatic voice will explain in detail the sequence of actions, specify the password, and add the service in the menu for deleting / adding services - the online customer service.
5
The next method is an order from a service provider for a service that allows you to determine any numbers, including hidden ones, order it once and in the future the number will be determined automatically.
6
One of the options for determining a call is to order a detailed listing of incoming numbers on your phone, in which case all the numbers of the callers, including those that were hidden, are indicated. If you are harassed by a landline telephone, and it is not possible to identify the caller, your telecom operator provides a service such as “malicious call detection”, certain numbers are dialed, detailed instructions are provided by the communication center, using which the caller’s telephone can be easily installed.
note
Many of the services that telecom operators provide are paid, you can determine the hidden number by setting up a call forwarding service, then 30 seconds after the start of the call, you will automatically see the caller's number.
Useful advice
Once carefully examining the rules for dialing international and long-distance calls, you can easily figure out where you called.
