Turn Off Microphone Indicator

Hello Wonderful People!

My Problem:

I want to do a presentation using my iPhone, and record it at the same time (voice only), but the Microphone Indicator, which appears as an orange oval around the clock, and as a red dot over my Wifi/Cellular symbol/s, messes up the flow, authenticity, and professionalism of my presentation.

My Question:

How do turn this indicator off, if at all possible?

I greatly appreciate any answers from anyone who feels that they may have a solution.