Rahul Mehta Gandhinagar LsCandidate

Unauthorized SMS spoofing - unauthorized person X sending SMS to A, appearing as B ; is it possible?

is it possible?
Is it possible at large scale?
How will get billed X or B?
can X get caught

It is very much possible if X is authorized to spoof, and is a trusted and registered entity with cell company.

But is unathorized spoofing at all possible, in an undetected way?