Sub loadfile
EditText1.Text = File.ReadString(File.DirRootExternal, "1.txt")
End Sub
Sub btnSave_Click
File.WriteString(File.DirRootExternal, "1.txt", EditText1.Text)
End Sub
Use a text editor such as Notepad++ to check it. You are probably opening it with an editor that doesn't support UTF8.I can see it directly from the device storage