Cant search networks manually. Once you use manual search once. Select a network and network gets lost. You can never manual search again ever. Even if you try nothing appears.
I have got it inspected. It is a software issue. Many customers are facing the same and waiting for fix. https://r2.community.samsung.com/t5/Galaxy-M/Still-samsung-M51-not-showing-network-operetors-list-in-manual/td-p/21179813?src=ShareByUserCM
