Absolutely. I'm always stoked to help a fellow nerd.
Open Camera has manual white balance settings you can use to compensate for wonky lighting, and as you know you can also always twiddle with that in postprocessing. You can also manually focus with a slider. I used it extensively before I shelled out for my Canon R10, and many of my knife reviews up until last year were shot exclusively on my dinkum Moto G5. I did find it immensely helpful to use a 3D printed clamp thingy to affix my phone to a tripod so it wasn't jiggling around.