When I try to upload a photo from my phone it says it needs to be on the same network as The Frame. My Frame is connected via Ethernet and my phone via WiFi obviously to the same router. When I connect the frame via WiFi, it uploads fine. Why won't it work via Ethernet? It's the same network.
If your router is dual-band, try connecting to the 2.4GHz band instead of the 5GHz band. Some systems treat transfers between bands as different networks.