As for the post, Bluetooth synchronization is not necessarily obvious, and you can get lost a bit in the settings as it is not intuitive. After that, once understood, it is done alone and carefree. It's just that it's not super intuitive.
It's great to listen to music from the phone without having to plug it into the jack. All through bluetooth, including calls whose quality is quite good, and what's more you will keep your points as it remains legal system and replaces perfectly the headsets.
Small remarks, bluetooth suffers from some small cuts for music since the last update android. I have an LG G3, and it unfortunately appears that since the last SHIFT android, music intersect 1/4 seconds from time to time randomly. That said, no problem with the calls. Question rates I suppose, call the nécessitants less power in transmit / receive Bluetooth level.