Taking an iPhone on an international trip can be a harrowing experience. Every time you post a status update to Twitter or check your email, you imagine your wireless carrier charging you a fortune in international data roaming fees.But there are ways to stay connected while you're traveling without freaking out about the cost. Taking advantage of some new features in iOS 7 and following a few savvy data-roaming strategies can ensure that at least that aspect of your trip is worry-free.Close the data spigotThe most important iPhone setting when you travel internationally is found in the Settings app, in the Cellular section: Data Roaming. Turn this switch off, and when you leave the country, your iPhone will just stop using data entirely, even when it's on the local phone network.But that's a real all-or-nothing proposition. You'll still be able to get phone calls and texts, and you'll get data whenever you're on a Wi-Fi network. But your iPhone will never trans