The landline at home is great. It has a volume switch that can be boosted up quite a bit, and also has a telecoil.
The cordless at home is not so good. No telecoil, and voices sound really muffled. (Cordless phones in general are tricky, I think. If the person on the other end is using a cordless, their voices sound really distant.)
The mobile phone is brilliant. It’s an iPhone – doesn’t have a telecoil but is so unbelievably clear. I even prefer it over the landline.
That leaves one other phone in my life …
The work phone.