Disable double click to install
Sorry I don’t know if this issue has been addressed already or not, but I recently got my iPhone XS Max replaced and just now noticed the double click to install button. I didn’t have it previously so I wondered how to disable it and didn’t find any advice. In fact the one answer on apple forums was that you can’t. But I found it. To disable it, just turn off Face ID for iTunes/AppStore and then go to AppStore settings and turn off require password. This way, you can automatically download apps without double clicking.