iphone have the best micro quality

I have a Samsung Galaxy A12, I am quite satisfied with the quality of communication

I am not able to get reliable news. I am senior and hearing impaired. I would like to buy a phone with high call quality. I am not so much interested in other parameters like camera etc. Of course a decent battery level will be helpful. other parameters are only of minor interest. The webpages give contradictory nature and confuse an old person. One more parameter may be availability of live caption so that when I talk to somebody I can see what other party tallks i is also in text format also.