@bookysue, Hi bookysue. So far I am managing well with my Panasonic amplified landline (its booster works well for increasing the volume, and it also has a "slow talk" feature which usually is enough to make it easier to hear fast speakers). Hopefully it will be awhile yet before I will need a captioned phone. I have happily been using closed captioning on all TV programs.
(My TV may be an "ancient" Plasma/vintage 2013. I am holding off as long as possible before I am forced to replace it with a privacy invasive smart TV. A recent Consumer Reports article indicated the only way to avoid the privacy invasive spying of a smart TV is by never connecting the TV's internet). In 2013 I had to have strobelights/horns installed in my condo (they are connected to my condo building's existing fire alarm system) The horns so far are impossible to ignore.