Mr Martin has called on Madrid to set up a "crisis cell" made up of the ministries of interior, foreign affairs and defence among others to tackle the problem.

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Have you ever been able to use a cell phone during a major crisis?

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It would have been harder for Argentina to solve its debt crisis by snatching dollars if those dollars had been stored on a few million cell phones and were needed for tomorrow's groceries.

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Their research and design is on game-changing topics from how people in sub-Saharan Africa and India use computers and cell phones, to the use of Twitter and social media during crisis, to how digital gaming contributes to business relationships in China, to how American families control internet use at home.

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Solar-energy cell sales also fell due to weak demand in Europe amid its financial crisis.

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This reliance, like a faith that our cell phones will work or the electricity will be on, means that failure can be a crisis.

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In Estonia's capital, Tallinn, Artjom Sokolov, the chief executive officer of Estonian Cell, said that the company had felt the consequences of joining the eurozone during the Greek debt crisis.

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