Hi and welcome to the forum.
You may find the bottom module is the issue. Given you can charge the battery it ‘suggests’ that is not the problem.
You don’t say how you dried the phone, nor provide any details on the setup.
Drying can take 24 hours in a warm/cool flow of air with all the modules separated. In separating the modules check for the white/red squares as in
You may also want to look at the following images of the breakdown of the bottom module to help in assessing how clean it is
1 Like