Story of the Candlestick Telephone
The first consumer telephones were heavy wooden wall mounted hand cranked telephones. That changed in 1892 when Bell introduced the first upright desk top telephone called "desk stand" or "candlestick" telephone.
This was a significant improvement over the wooden wall models and Bell understood the need for innovation because this was now one year before his first telephone patent was set to expire, opening the door to competition. Think of the enhancements since 1892!