Bluetooth

How it tests

The tester opens their phone's Bluetooth settings first (a phone shows its name only while that screen is open), or puts another device in pairing mode. The tool powers the adapter on through the kernel's management socket (unblocking it, Low Energy on), scans classic and LE, and lists what it hears, nearest first, 8 at a time (“the 8 nearest of N”); the list only grows at its end. The tester picks their own device. Names show on screen, never in the report; the named and unnamed counts go in.

How it decides

Supported: powered on, the scan found devices, and the tester picked their own (challenge). Partial: heard nothing in 30 s while the tester says a device was discoverable, or “Mine isn't listed”. Failed: no adapter, hard-blocked, won't power on or discover, or it went away. Not tested (other): no management socket.

How sure it is

Picking their own device closes the stranger route. Nothing is paired, so a radio that scans but can't pair or stream still passes.

On a real Mac

• On a MacBook Air (13-inch, Mid 2012): 18 devices heard, 5 named, the tester's phone picked from the 9 listed.

What could mislead it

• Could pass when it shouldn'tPairing or headphone audio (A2DP) fails though discovery works (known on some Broadcom adapters).