The feature we are discussing is usability.
The tool we are discussing is not a telephone, but a "mobile device". (Not even a "mobile communication device" Cloud - they can do a lot more than communicate)
Like most other mobile device features,
you can pay more and get better usability. (But you won't have to pay that much more and you won't have to wait very long.)
The longer you call your thingie a "telephone" the longer you will be mocked by modernity.
My mobile device is Windows Mobile 6 and if I want to call Jacquelita on it I type "J" followed by the call button.