“Ma Bell offered mobile phone service in 1946. “
Via VHF radio and a 40lb battery.
A nationwide cellular network was not even conceived.
Yes, Bell labs developed a lot of great technology, then either shelved it or turned it over to whomever wanted to turn it into something.
Including the transistor. Which they did practically nothing with.
I don't suppose you see the irony of replying using billions of them.
Bell Labs invented Unix, the precursor of Linux, which became the foundation Android of the Android OS.