[em10fan]

Many men?

If you are wearing a suit, a smartphone makes the trouser pockets bulge a lot, so it's common to keep it in your shirt pocket or jacket inside pocket - Both of which is next to your heart.

[Maxious]

The FDA [1] advises "don’t carry the phone in a shirt or jacket pocket directly over the pacemaker." as well as the American Heart Association [2] "Avoid keeping your cell phone in your front chest pocket."

1: https://www.fda.gov/radiation-emitting-products/cell-phones/... 2: https://www.heart.org/en/health-topics/arrhythmia/prevention...

[foepys]

They can advise as much as they want, people just do it anyways.

Same with smoking, drinking, taking drugs, etc.

[netsharc]

One hopes people with a device keeping them alive would have an incentive to follow instructions, especially if it doesn't involve addictive substances. They also get told to avoid metal detectors, and they know to do this, so it's probably, hopefully, an easy habit to change

[antihero]

I just realised after posting this that I wear a denim battle vest 99% of the time and this does in fact have an upper pocket. Oops.

[Mauricebranagh]

And quite a lot of shirts do as well.

[tzs]

Perhaps it is time for the codpiece to make a comeback in male business attire, updated for modern times to include a phone pouch.

[virgil_disgr4ce]

The CodCo JunkKeeper™ Tactical Codpiece features heavy duty military-grade nylon webbing, patented SafeSack™ zipper technology, hammer loop, tape measure holster, and copper mesh Faraday-caged phone pocket to keep your swimmers largely unmutated!