Think your mobile calls and texts are private? It ain't necessarily so

Yeah, never heard of MENA before, figured that its probably "Middle East and North Africa".

My thought exactly. What knowledgeable person was ever under that misapprehension?

Even if you're not familiar with the technical details, a basic capability for critical thought should lead you to suspect that long-distance communications do not come with any guarantee of privacy.

And, of course, if you understand security, you know the question is not well-formed, since "private" used as an absolute without further qualification doesn't mean much. (Private to whom? To what extent? For how long? Including metadata and traffic analysis? Under what sorts of attacks? It's a largely meaningless term.)