Can a Bluetooth LE powered device discover a classic Bluetooth device and vice-versa?

Question

I\'m wondering if Bluetooth 4.0 (low-energy) mobile phones could discover classic Bluetooth devices (3.0 and lower), and vice-versa. All I am interested in is discovering th

Answer 1

Its perhaps late but just to clarify. The question in the title sounds like its asking about the interoperability of the two different Bluetooth modes, but the details of the question drift toward whether or not the mobile phone supports these two capabilities.

As far as the interoperability is concerned, as pointed out by VSingh, Classic Bluetooth discovery and Bluetooth Low Energy discovery work in opposite ways.

In classic, the endpoint [eg your Android] SEARCHING for devices TRANSMITS inquiry packets. Devices in discoverable mode, LISTEN for these packets and respond accordingly.

In Bluetooth Low energy, the endpoint [eg your Android] SEARCHING for devices LISTENS (scans) for advertisement packets. BTLE devices that are discoverable TRANSMIT these advertisement packets.

If the radio on your mobile device can do both of these things, then you can discover both classic and low energy devices.