I have a Samsung Galaxy S6. Sometimes the keyboard doesn't appear. While trying to enter my GMail password, no key board appears and when I click the Password field, the window closes. I've tried the suggestions I saw in an androidcentral blog (don't remember which one) and they haven't worked. Sometimes the Settings options suggested (Touch input Samsung Keyboard App) do not appear in my settings. I am using Google keyboard and it does not appear in the list of Apps either. I have tried restarting the phone. Nothing helps.