It was on the very first android phone, HTC dream. I still have mine. Bought it on launch day.

I see no change in my current plan nor have I gotten any emails about any changes to my plan.

If T-Mobile does this I’m gone. SimpleChoice had free international roaming which we use yearly when we visit family. Everyone on my family plan uses it and It was an amazing feature at the time now they charge per month, per line. Been on T-Mobile for 19 years.

For what its worth, despite missing the punchline of the actual measurement, the guy knows what he is talking about. Taking a dB measurement in C weighting over some integration period is how to do it for this scenario. I doubt his meter is calibrated but its doing a good job.