title: Why does some bluetooth devices only expose their MAC without name?
body: <p>When i set &quot;Show devices without names&quot; off on developer mode i see only a few bluetooth devices around me with their names.<br />
  However when i set it on, i see a lot of bluetooth MAC address, around 50 of them, and i expected that after a few minutes they will all broadcast their names, but nothing is changing.<br />
  Even if i wait 30 minutes, my devices still don't get their names.<br />
  Any idea why some devices won't expose their names?<br />
  I have tried waiting for long periods of time, and i have poked around on forums, but nothing helpful found.</p>