you can use integrated BT, you just have to select it on your iPhone and you are fine. my BT45-TOY had some weird issues whereby it would switch to MD mode magically even if i was listening to the FM radio. it would also randomly disconnect from my iPhone and not come back for minutes or sometimes hours, even after multiple attempts at forcing it to reconnect. i believe the device itself was faulty. sadly USA SPEC wouldn't RMA the device because of the channel I purchased the unit from... from an authorized retailer of theirs! So I RMA'd the unit to the retailer and they have a brand new in-box BT45-TOY already enroute. in the meantime, i installed a VAIS SL3B-L and its working as expected.
if you want to buy my new replacement BT45-TOY, PM me. ill sell it at cost(130). (great sales material above, eh?)
