The NM206 was sold in the Japanese market to work on NTT DoCoMo’s PDC network. It was Nokia’s first phone with voice recognition technology which was called "Yobeba". The voice recognition capability was launched by pressing a small "talking head" button on the back of the phone. Users could record around 10 different names to match against their address book to make voice-initiated calls. An addiotional marketing message Nokia used to promote the Yobeba feature was that it allowed users to easily call people when it was dark without having to look at the display.
The phone also included an on-board answering machine.
Apparently the device had an "
Easter egg" where if you pressed the “talking head” button and said a certain Finnish word, no matter what has been stored it called the number stored first in the list.
At launch in Japan the phone cost 19,300 yen.
The phone featured mouldings for a SIM card slot as the PDC networks considered having a SIM card numerous times but always abandoned it. There were also versions of this device for RadioShack and AT&T in the US.