Is it even possible on android? Is there a FOSS dialer to optionally encrypt some phone calls (non voip) using a pre-shared key with other party?
Is it even possible on android? Is there a FOSS dialer to optionally encrypt some phone calls (non voip) using a pre-shared key with other party?
Isnt enough software encryption like with voip calls (like telegram)?
It’s on a different stack. Telegram (and VoIP) operates on the network stack, cellular call is working on the GSM/LTE stack. Networkin stack is more opened and free to do what you want; GSM/LTE stack have many proprietary tech that’s is not open to everyone.