For everyday conversations using smartphones, it is not necessary to buy a cryptophone, which encrypts the conversation by default. Most instant messengers already have an integrated application for free calls. Its advantage lies not only in encryption, but also in the fact that its use will not cost you a dime.
We use secret chat rooms for secure communication
To minimize the amount of traffic spent on telephone calls, activate "Data Saver" in secret chat rooms
All you require is an Internet connection. However, do not forget that this consumes approximately 1 MB of traffic per minute. If you talk in this way for an average of an hour a day, it will take you 1.8 GB per month. For long conversations, we recommend using open Wi-Fi networks.
However, with the help of one trick you can reduce your traffic consumption. Under "Settings | Data" check the box next to the "Save data" option. Now secret chat random will not use HD-Voice technology, while the call quality will deteriorate, but traffic consumption will decrease.
If you apply all the tips presented here for secret chat rooms, you will almost perfectly protect your information from attacks. In most cases, after that, even the secret services will not have a chance to get to your data from secret chat rooms.
It is clear that one hundred percent protection does not exist. But now with secret chat rooms it will take an incredible amount of effort to view, as the data is optimally encrypted and protected, even when the intelligence agencies conduct full-scale surveillance.