Hi - I recently bought some headphones (which I love, Sennheiser Momentums). I have noted before I bought these, that the battery on my phone has been going down a lot. But I've noticed it even more lately. I'm not sure if it's using Bluetooth which does it. I have an apple watch and the Bluetooth doesn't drain as fast with that. Could it be the combo of streaming from Apple Music and the headphones using 4.0 Bluetooth? Does BT 4.0 drain faster than 4.1?