The average duration in the index is 26 years, which means it is super sensitive to interest rate changes.

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The sound is captured on super sensitive recording equipment, the sort normally used in industry to test the strength of bridges or planes.

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MyDrivers' source also tipped a 9.9mm thickness, along with the presence of "super sensitive touch" technology -- as featured on Nokia's Lumia 820 and Lumia 920, plus Huawei's Ascend Mate and Ascend P2 -- that supports glove and non-capacitive stylus input.

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It's also coated in Gorilla Glass 2, with ClearBlack tech and a high-brightness mode to improve outdoor visibility and the same super-sensitive touchscreen that means you'll be able to steer the phone with your gloves on.

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