Why does my cell phone beep when talking?

Question

I can hear a faint beep while talking but I have no incoming calls or a low battery , I don't have a minute counter either it also echoes when I talk about "certain topics".

Answer 1

Does this happen all the time or only when calling certain people?

One possible explanation is that the other party is recording the call, in such case a beep is played every few seconds precisely so that you know that the call is being recorded.

Answer 2

THATS DEM PEOPLES TAPPING INTO YOUR PHONE THEY GO TRY TO GET YOU