What problems did Alexander Graham Bell face from making the telephone?

Alexander Graham Bell faced several challenges in developing the telephone, including technical difficulties in transmitting clear sound over long distances. He also encountered skepticism from the scientific community and competition from other inventors, such as Elisha Gray, who were working on similar technologies. Additionally, securing patents and funding for his invention proved to be a significant hurdle, as he sought to protect his intellectual property while attracting investors to support his work.