Even some hearing aids like the ReSound Quattro’s, which don’t have telecoil functionality per se, give preference to the hearing aid near the receiver of a classic landline phone and have a “Phone Now” function that turns down the external mics exposed to the room environment on the other ear. I turned off the “Phone Now” function in the fitting software so it wasn’t activated by the magnets in my over-the-ear BT headphone “speakers” and one can ask one’s HCP if a similar OFF switch is available and/or under smartphone app control for one’s HA’s.
The funniest thing about Phone Now is that at one point ReSound actually provided a small disc-shaped magnet in the product box and instructed the new user to glue/tape the magnet in the vicinity of the phone receiver on the touchscreen of your smartphone!!! Talk about people worrying about bezels, camera/speaker notches, … and now you want them to glue a magnet to the face of the phone!!!
I was disappointed. I didn’t find a magnet when I first opened the Quattro box in October, 2018. I think some provider on the forum (Um_bongo?, Neville?, …) mentioned that they and other providers were simply removing the magnet before handing over the HA’s to the new user as it just confused new users. But maybe ReSound finally wised up and realized that the idea of taping a magnet onto your $1K beautiful smartphone screen is a bit ludicrous unless you’re amongst the 10%, 5%, 0.1%??, that truly need this functionality…