Angry germans were angry over the privacy invasion and in response to this sort of news, Vodafone is planning to have the encryption plans for the SIM card service that will be used for data communication for its network and will soon expand to the voice communication.
It was said to be possible through the separate smart cards or token but then, it will work by using the PIN and digital signature for encryption through SIM. Is there a reason to use PINs for encryption? That is one of the security weaknesses for using that. In the future, the company will be using the PGP encryption system for the SIM card service.
Also, there will be Secure Call app for Android, IOS and Windows Phone but to make things more secure until then, you may be better off using Secure Call app in Cyangenmod.
