Nokia firmly leads the pack by Bluetooth numbers
|Sony Ericsson Mobile Communications||888|
|Samsung Electronics Co||241|
|Hon Hai Precision Ind Co||82|
|Continental Automotive Systems||35|
|Liteon Technology Corporation||25|
|Alps Electric Co||18|
I am grabbing the information from nearby devices on my daily commute to work, which results in an average of 150 unique devices. The data was gathered infrequently, mostly on weekdays.
PS. I'll get back to you shortly (this year) with a more interesting "tool" related to bluetooth!