Same here, was waiting for this since the first iPhone, a music player with phone function. Not the other way around.
After around 24h of usage I can say that the battery life is pretty good, considering that I downloaded lot of stuff, WhatsApp backup, apps and it's still optimizing the consumption at this stage I believe.
It's quite thick, especially with the case, and heavy, it doesn't bother me but I'll probably have to give up using it for navigation on my bike / car.
The camera is pretty bad and slow, at least in low luminosity. Not an issue for me. Let see how everything goes later, during active days but I'm pretty happy and excited to listen to my music library at work.
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