The Ericsson T39m was the first commercially available mobile phone to support Bluetooth. It was a classic Ericsson design and was also notable for being a tri-band phone that supported GSM 900/1800/1900 networks, which meant it could be sold globally.
In addition to supporting Bluetooth, it was also an early device to support built-in GPRS data capability and was Ericsson’s first commercial device to support GPRS. The first phone Ericsson offered with GPRS was the
Ericsson R520m, but this was primarily used for operator testing.
The T39m was an evolution of the Ericsson T36, which was announced in June 2000. The T36 remained as a prototype device, as it did not support GPRS, a capability which was added to the almost identical looking T39m.
The support for Bluetooth was a key milestone, and built on extensive work Ericsson had done to establish the standard that is now taken for granted. At the time, it was described as the "future standard for wireless connectivity between devices" which would allow the phone to communicate with “a Bluetooth Headset, laptop, PDA or other device via a radio link instead of a cable”.