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FCC mandates all mobile phones in the US to be compatible with hearing aids
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
This wasn’t a thing already? We’ve had cell phones a long time.
edit: punctuation
I recall it being required in cars. IIRC all cars after 2012 needed to have bluetooth and hands free.
Perhaps phones just operated in proxy to that
Not officially, but nearly every device has supported hearing aids compatibility for years, well before smartphones became the standard.