as detailed in several posts before me, APN settings on the UMIDIGI A3 (pro) cannot be edited/removed/added. there isn't any add/remove option in the APN list and all parameters of specific APN are all greyed out and cannot be edited
none of the solutions proposed here worked for me. Even a factory reset didn't resolve anything. Still facing the obligation to buy a new phone or change provider if this issue can not be resolved
