Can't Write To Sd Card Samsung S10. Plug the read only micro sd card into windows. The simplest method to deal with the “can’t read or write to sd card” error is to reformat your sd card.

To perform the steps below, an sd / memory card must be inserted. Fyi, if it's some china remake cheap version of a sd card you continue to have issues, buy a suitable sd card whenever possible. There have been issues reported with sd cards at times, see one of the threads: