No, I went to a local electronics shop. I don't have a pile of decommissioned phones in my house, nor the eyesight or hand-steadiness for fixing things that small. User-serviceable is definitely a distinction, but I suspect family members would expect me to be their technician anyway, and I'd point them to the electronics shop due to physical issues above, and fear of bricking their devices.

If your family members ever had to mount an ikea furniture or equivalent, they'll probably have an as easy or easier time replacing a part on a fairphone. Especially for the battery. At least for version 3 and older. I don't know for later models. If you know how to swap batteries in a tv remote, you know how on this phone.