I have a pixel 6 on Google Fi. The cell coverage at my new home is not great. If I have my preferred network type set to 5G I have no Internet connectivity. If I manually change it to LTE I get connectivity (albeit slow).
Shouldn’t the phone try this on its own? If not, is there a legitimate app that will do this for me transparently and effectively?
The phone should do this by itself. Other brands of phones do. I don’t have that model to check, but sometimes there is an auto or preferred setting that will encourage it to do that. May require you doing some research.
Unfortunately there is no way to leave that setting blank or set to automatic that I can see or find.