>>691598
>I'm no photographer, and I'll be just using my phone's camera, but I want to take the best photos I can.
A shame, as someone who is I would suggest any kind of decent camera body (Canon, Nikon, Olympus, Sony) paired with a fast lens, a circular polarizer and a lens hood. Maximum image definition and minimal glare and reflections.
That said you can get some of these abilities on your phone as well. There's small lenses that attach to phone cameras these days that might have some of the abilities I am talking about but I doubt you can get them on short notice.
Anyway as >>691600 said, don't use flash due to reflection issues. If it's too dark to get good images, I would suggest you get some VERY bright lights and put some material on it to diffuse it, make it a "soft white" light that doesn't cause a lot of glare. If you can get very bright LED lights (which would not heat up much), I would suggest wax paper over the front of them if you can find nothing else. Otherwise there are professional materials that can be used for those purposes.