No wi-fi? No problem. Use these apps to travel sans service without sacrificing your safety or experience http://on.natgeo.com/2BxAWr5

No wi-fi? No problem. Use these apps to travel sans service without sacrificing your safety or experience http://on.natgeo.com/2BxAWr5 

https://twitter.com/NatGeoTravel/status/957267030171889665