My Dad is having problems hearing the TV. He has his hearing aids hooked up to his iPhone and can listen to music/make calls through them so I assume they have some sort of Bluetooth link.
Has anyone tried something like this before: https://www.trademe.co.nz/a/marketplace/mobile-phones/accessories/cables/listing/3756866955 or do you have to buy the special hearing aid TV adaptors the likes of Oticon make?