Communication is an important aspect of travel and in case of an emergency, one must always place oneself in the best position to be in touch with those that matter. Even if it is a case of contacting the local ambulance service, having a local sim card will appear a smart move. What's more? After having purchased a sim plus a data package that works well for you, you can look at downloading useful applications ranging from the Dubai Metro which comes off as a convenient means of accessing train times that will facilitate your future paths. Added to this, the application called Tripjohn is handy based on the breadth and scope made available in terms of hiring a car to navigate important areas in the UAE including Dubai, Abu Dhabi and Sharjah.