Bring both, and compare results afterwards. You're likely to find that the answer is not as black-and-white as you'd expect, and very dependent on the subject and scene at hand. Also compare the output on mobile screen, good computer screen, and maybe a few prints.

One thing to be aware of is that cellphone cameras tend to try and give you the kind of result that you'd get from using a semi-professional camera and aggressively processing it, cranking up color saturation, noise reduction and sharpening even in "standard" picture modes (the "standard" profile of some phones is more "brutal" than the "vivid" of many dedicated cameras).

Handheld night photography performance of current state-of-the-art smartphones seems surprisingly good (you probably will struggle to match it unless you have a VR-assisted and/or very fast lens on the Nikon), but the pictures tend to fall apart from over-aggressive noise reduction when viewed on a full size monitor....