Calls without a SIM card
Perhaps you have had situations when you had to call a person and at the same time remain completely anonymous and not burn your number.
Using a SIM card identifies you with a cell tower closest to you, I'll tell you so if you use the left SIM and call someone using unverified call services, then most likely you will not be able to remain anonymous on the network and your traffic is not encrypted and there is no point from such a SIM card, the place where you are can be tracked.
In this regard, I want to share with you services for calls. in which all traffic passes through the TOR network or simply has a high degree of encryption in the network.
List of sites:
https://tox.chat/
https://www.linphone.org/
https://jitsi.org/
https://www.ringcentral.com/
https://www.mumble.com/
Personally, I myself used the latest service for anonymous calls and I can recommend it to you, but the main thing is that the choice is yours.
I don’t see any reason to tell you about each service, because all the detailed information can be found on these sites, which I indicated above.
