Significant billing overages, runaway application costs, and exorbitant international roaming fees are no longer a corporate rarity.

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And it should function without the user having to switch SIM cards, pay outrageous roaming fees or deal with dropped calls.

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And, as they phone home, holiday-makers might even mutter a word of thanks for the European Commission's work to force down outrageous mobile-roaming fees.

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Its Digital One Rate, offering a flat rate anywhere in the country with no roaming fees, has attracted more than 500, 000 subscribers since its launch in May.

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Regulatory measures are also weighing on profits in the sector, including cuts in roaming charges and mobile termination fees, which national operators charge one another to use their networks.

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The FCC proposal also would set up alerts for international roaming charges and would require phone companies to publicize the ways consumers can track their phone use and avoid fees.

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