encrypted

What system or phone is used today for communicating with each other if one wants to avoid someone or something listening in on the conversation? If I google it the following methods pull up where some of them I know are insecure! Signal WhatsApp Telegram Wire Threema Is the old 'burner'...

Most if not all SIM cards are traceable, they provide the operator with information about where you are, when you used your phone the last time with date & time stamp and from which location you made your last phone call. What about secured phone, with encryption and what else they can do...