Apple’s iPhone series have been known for their simplistic approach. The overall eco system is made in the same manner. I bought this one for my wife as I know she aint a power user.
Pros:
Best build quality.
Best camera.
TouchID is awesome. Best fingerprint scanner on a mobile device.
The 240 fps slomo is the best.
Camera optics are awesome, the best out there with Optical Image Stabilization.
Simplistic approach towards the user interface.
Consistent performance across all apps i.e quick and simple.
Excellent gaming experience.
Battery life is quite decent. My wife charges her iPhone 6+ once every two days.
Built in hardware sensors for Health apps to measure the steps, elevation and distance.
I still love the readability mode on the safari browser.
Cons:
Super slippery. You will need a skin or case if you are worried about damaging the phone.
Restricted eco system ( Classic apple : ) ) , you still need iTunes or a software to transfer media.
Not many apps still make the right use of the large screen. Most of them are simply blown up to fit.
Multi tasking capabilities are still elementary.
Lack of customization. You still cant add mobile data in the quick settings drawer or do anything else. What you see is basically what you get.