answer:Well, step one: Don’t answer your cell phone in the car. There’s nothing in the world that can’t wait until you pull over safely. You of all people should know that. No one should answer their phone in the car. Next, does it help to put the phone on speaker? I understand this isn’t the ideal solution, but perhaps it would work in the interim? Third, AT&T has a rating system for hearing-aid compatible phones on their network (I remember you saying you’re on T-Mobile… I’ll look for one from them as well.) here Here‘s the T-Mobile list – about ⅔ of the way down the page.