Actually I don't travel a lot but I still have use for it. For example, when I sleep, I don't expect anyone to call me so I put it in Airplane Mode and it saves a lot of battery, I charge once every 4 days or so. Also, many people are saying that in Airplane Mode, you cannot use WiFi, this is wrong. To use WiFi, all you need to do is turn Airplane Mode on, then turn WiFi on after that and you're good to go. Yes it takes two steps, however, I'm just saying that it is possible.