Facebook might have a solution to its free WiFi's shortcomings
 

Facebook knows that a key limitation of its Terragraph gigabit WiFi system is how it falls apart over long distances. Line of sight is kind of a pain that way and even a 7GBPS data signal degrades when there's a nearby object blocking its path. So it...

http://www.engadget.com/2016/05/10/f...-shortcomings/