protected PhyRequest readPhy() {
		return Request.newReadPhyRequest()
				.setRequestHandler(requestHandler);
	}
Reads the current PHY for this connections.
<p>
PHY LE 2M and PHY LE Coded are supported only on Android Oreo or newer.
You may safely read PHY on older platforms, but you will get PHY LE 1M as TX and RX PHY
in the callback.
<p>
The returned request must be either enqueued using {@link Request#enqueue()} for
asynchronous use, or awaited using await() in synchronous execution.

@return The request.
ble/src/main/java/no/nordicsemi/android/ble/BleManager.java