Domestic roaming is usually free on all the major cellular providers. Still, international roaming often involves being charged data roaming fees that become costly quickly. Learn what data roaming is ...

Monitor your usage, switch to Airplane Mode, and other tips to prevent a huge bill Making calls or using data services outside of your cellular provider's coverage area can get very expensive.

International travel is exciting -- until you get roaming fees. Abide by these tips to keep using phone apps and data stress-free on your trip. David Lumb is a senior reporter covering mobile and ...