public ConnectRequest usePreferredPhy(@PhyMask final int phy) {
		this.preferredPhy = phy;
		return this;
	}
Sets the preferred PHY used for connection. The value should be a bitmask composed of
{@link PhyRequest#PHY_LE_1M_MASK}, {@link PhyRequest#PHY_LE_2M_MASK} or
{@link PhyRequest#PHY_LE_CODED_MASK}.
<p>
Different PHYs are available only on more recent devices with Android 8+.
Check {@link BluetoothAdapter#isLe2MPhySupported()} and
{@link BluetoothAdapter#isLeCodedPhySupported()} if required PHYs are supported by this
Android device. The default PHY is {@link PhyRequest#PHY_LE_1M_MASK}.

@param phy preferred PHY for connections to remote LE device. Bitwise OR of any of
           {@link PhyRequest#PHY_LE_1M_MASK}, {@link PhyRequest#PHY_LE_2M_MASK},
           and {@link PhyRequest#PHY_LE_CODED_MASK}. This option does not take effect
           if {@code autoConnect} is set to true.
@return The request.
ble/src/main/java/no/nordicsemi/android/ble/ConnectRequest.java