People are increasingly connected to each other, whether through social networks, connections through mobile phones, or even by good old landline.
In this way, people from all over the world talk to each other, reducing geographical distances and intensifying relationships, so that I can make calls, how to make an international call?
What does the acronym DDI mean?
The acronym DDI means international direct dialing, that is, an automatic international dialing system that consists of adding international and regional prefixes.
So, the DDI system is the number that appears after the + (plus) symbol in the caller ID number.
Furthermore, the DDI is different according to each region of the country, its cities and states, and is also different according to each country, and therefore, to make an international call, you need to know the specific DDI of the location to which the call will be made.
In this case, the code Brazil's IDD is +55, which will appear in front of the contact number.
What is the difference between DDD and DDI?

The DDD It is the telephone code used to identify each city and state, being used in national and international calls, unlike the DDI, which is used to identify each country and only in calls abroad.
How to identify a country's IDD?
There are some DDI's – International Direct Dialing – that are already known, such as those we will see in the following table:

You can also search for the DDIs of other countries here. After that, it will be very easy to make your calls.
How can I make an international call?
After identifying the IDD of the location where the call will be made, simply make the international call, as follows:
00 + operator code (Ex: 21 from Embratel) + DDI + DDD + destination telephone number
00 being the code for Brazil, which will be +55.
When making international calls, you will also have to dial the originating number, not just the destination number, as with national calls.
Additionally, another option is to make an international call using the dialing service offered by Embratel, simply call 0800 703 2121 and the operator will dial for you.
In this dialing model, the rate charged will be the rate of the phone to which the call is being made!
Can I make an international collect call?
Yes, it is possible to make an international collect call, simply call Embratel on 0800 703 2121 and tell the attendant the desired number, and that the call will be collect.
It is important to note that the prices for international collect calls are usually higher than for normal calls, so only do so if it is an absolute necessity.
How much does it cost to make an international call?
The costs of phone calls abroad are relatively high, compared to phone calls between cities with different area codes.
Furthermore, the costs for calls abroad will also depend on the length of the call and the country to which the call is being made, but operators usually offer more affordable plans with complete minute packages for those people who dial international calls with a certain frequency.
Therefore, try not to take too long on your international calls, and opt for the best plans from the operators.
How to make free international calls online?
Currently, it is possible to do free international call online, simply having access to the Whatsapp application and make the call through the app for free.
You will need to have internet access and the person you are calling will need to have internet access, and that's it! Click on the phone icon in the app and you will be able to make the call, as shown below:

In addition to Whatsapp, you can also make international calls online through Skype, FaceTime, Viber, among other platforms that allow online calling.
You can download them from Google Play or Apple Store, and install them on your mobile device, or install them on your Windows or Mac to make your calls!
How can I call Brazil from abroad?
You can contact the operator wherever you are to find out about the country's international dialing code or ask her to call you directly in Brazil.
Alternatively, you can purchase an international calling card and follow the instructions on how to call Brazil from abroad. These instructions vary depending on the rules of each country.
And, if you are in one of the 50 countries that Embratel serves with the Brasil Direto da Embratel option, you can call collect to Brazil, only paying for the call when you return to the country, and in reais.
These countries include the United States, Portugal, Spain, France, Italy, Argentina, the United Kingdom, among others.