It seems that the Logos app can handle no connection, or a good connection. If a bad connection is there then it doesn't handle it. I was away this last week and for whatever reason my laptop worked on the wifi but neither my phone or ipad did. They connected but could not view pages. I could only use Logos on either device by disabling the wifi. My opinion is that the app should be able to handle a bad connection by falling back on downloaded resources.