Should you leave your iPhone at home when you go to Europe? An iPhone can be either a friend (think of all those great photos you can take in a snap), or a lousy travel companion because of its use of rich data that automatically downloads.

Two important tips: When traveling abroad, turn off "data roaming," and switch "fetch new data" to manual. Use Wi-Fi services, not the 3G system, to check e-mail, AT&T recommends.

Since iPhone charges about $19.50 per megabyte of data downloaded internationally, you'll face a mighty bill if you aren't careful.

Also remember that not every American cell phone works in Europe. In general, AT&T and T-Mobile phones do, while most Verizon and Sprint phones don't.

— Detroit Free Press

UNDERWATER PHOTOGRAPHY

SOME TIPS TO REMEMBER WHEN SNAPPING THOSE BEAUTIFUL SCENES

To shoot fantastic underwater snorkeling photos, • Shoot near the surface on a bright, sunny day for best light. Below 20 feet, you need a strobe.

• Shoot up, not down on the creatures and plants, and get as close as you can.

• Be as still as possible while shooting.

• Get to your snorkel destination early so it's not stirred up by others.

• Make sure your mask fits so water doesn't get in.

• Don't snorkel alone.

• A cheap underwater disposable camera costs about $10 but the results are often disappointing. For the best results, invest in a waterproof housing for your camera or a decent waterproof camera.

Best places on Oahu: Three Tables, Hanauma Bay and Pupukea.

— Advertiser staff

NEW YORK

NATIONWIDE DELAYS EXPECTED WITH JFK RUNWAY CLOSED

The main runway at New York's John F. Kennedy International closed this month through June. Millions of travelers will experience delays. JFK's Bay Runway, at 14,572 feet, is one of the longest commercial runways in the world. The runway is being repaved with concrete instead of less-durable asphalt and widened to accommodate today's bigger planes. With about one-third of JFK's traffic and half of its departures being diverted to three smaller runways, planes will wait longer on the ground for takeoffs and in the air for landings. Delays may ripple to cities across the United States.

— Associated Press