How to Travel the World With Your iPhone

Taking your iPhone along with you on an international trip could run up an astronomical phone bill if you don't take the proper precautions. The iPhone's various apps and features automatically download data even when you're not using it, and that can be quite expensive in foreign countries. Make sure certain settings are checked, and consider buying an international plan for the time you're away.

An inventory for a trip to a tropical beach could read like this:

• Swimsuit, check.
• Sunscreen, check.
• Passport, check.
• And iPhone, check.

Well, make that a possibly giant check, drawn from your bank account. Unaware travelers can blithely rack up eye-popping bills on their iPhones while traveling abroad.