INSTRUCTOR: In The Telegraph, September 20, 2015, reporters Josie Ensor and Magdy Samaan describe a 120,000-member Facebook group, Karajat Al Mushuntiteen, "Travellers' Platform," as an eBay or one-stop shop for migrants from Africa to the Middle East.

On this site, members provide maps with the best routes and good stopping points on the way. When one route is closed off, this is noted and new options are suggested.

We have seen how immigrants use smartphones to take care of daily needs. Next, let's look at uses of these phones in riskier situations.