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Tips for Using Cell Phones Overseas
Make a temporary change to your monthly service plan
Most major cellular providers offer international roaming plans that can be added and removed without affecting your long-term contract. The monthly fees and prices per minute vary widely among service providers. And it may not help much: AT&T's, for example, charges $24.99 for 20 megabytes of data transfer (about 20 JPEG photos) and zero minutes of voice calling. And that's only available in 29 countries. Anywhere else you'll spend two cents per kilobyte, which means that it would cost $.75 just to read the international roaming rules on AT&T's website (the page is 37,446 bytes).
The upside: International plans can usually be added and removed without affecting your long-term contract.
The downside: High rates can still apply. Some international plans, like AT&T's iPhone international plan, are an addition to—not a replacement for—your regular service.