On any cell phone that I use I can get enough volume to hear but what I need is tone control. For instance I need to get more higher frequencies and less lower frequencies to hear the other person. It is because of my hearing frequencies the way they are. Is there a cell phone where the frequencies can be controlled? Like the old radios where you could turn the high frequency control and get more highs. Maybe I need a special one built for my condition. Any help in this matter will be appreciated.