&gt; I&#x27;m sure there&#x27;ll be edge cases where it won&#x27;t work and we&#x27;ll need other options.<p>This is exactly the unfortunate attitude of most of the mobile apps developers. Exactly the reason why I can&#x27;t use most of the apps, even the high profile ones like the BBC News. They must understand that it&#x27;s not anywhere close to 99.99% of cases, that a good connection is available more like 10% of an active time, and, therefore, a great deal of caching and prefetching is mandatory. If most of the time most of the functionality of my mobile device is not available I&#x27;d rather stick to the tiny subset that is available consistently and ignore the rest.<p>And I suspect that most big cities got a similar patchy coverage pattern as in London.