One survey does not a trend make, but a recent poll by mobile customer research firm On Device should raise the alarm in Cupertino.

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Zukin says poll takers adjust the numbers for mobile phone voters the same way they do for any other hard-to-reach group.

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Jana conducted the poll between 7-11 March 2013 with mobile phone users from Lesotho, Rwanda, Namibia, Tanzania, Zambia, Zimbabwe, Uganda, South Africa, Kenya, Ghana, and Nigeria.

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