With my vision issues I don't have a smart phone, my emergency flip phone can take pictures but I don't really know how/have never done it. We have an older digital camera with a card that I can insert into a USB drive holder, it isn't a direct USB connection.
I have a small house and no really good way to take pictures of completed large quilts. So I use my large workspace which is also my queen sized bed. Gives consistency as well when you look at the multiple pictures but always the same headboard. Always end up chopping off part of the quilts in the pictures, but the smaller ones work pretty well. Still, I'm not such a fan of the distortion that comes from taking the picture at the foot of the bed.