[vmarius]

Wow. I wonder how far from the phone this signal could be detected.

[sgt]

Just a few meters, as per the article. I'm guessing if you can't hear it on the iPhone's speaker, it won't be audible on AM radio either.

[m0xte]

Correct. Although it’s possible on older handsets with 3.5 jack that the audio amplifier in the handset itself is possible to receive. I’m not sure about lightning.

But I very much doubt at the stated range. The EMC guys would be all over that.

[erk__]

He says in one of the comments that he was able to get a signal you could hear from around 20 feet away.

[m0xte]

I suspect that’s unlikely from my own experiences on this stuff. Perhaps 20-40cm is more likely.

[eptcyka]

If you are disregarding that detail of the story, why not dismiss the author outright?

[m0xte]

I am disregarding the whole thing. The author knows nothing of EMC. This is expected at close quarters.

[ponker]

Why would you assume that his experiences and yours are the same?

[m0xte]

It’s physics. There is EMC testing done on these devices. There is little opinion involved in such matters.

[murgindrag]

You've clearly never done EMC testing, if you think there's no opinion involved in such matters.

You might as well say "It's software engineering. There's no opinion involved..."

[m0xte]

I have, in defence sector.

[fredley]

It depends on how noisy the surroundings are. In an office block with potentially many other iPhones and sources of interference, probably not far at all. Out in a suburban or rural setting probably much further.

I wonder if it'll tune into phone calls?