The Vertu Signature Touch is the first luxury handset that's as premium on the inside as it is on the outside. And while the latest Vertu will win praise for its attention to detail (after all, its hand-formed titanium shell is enclosed in sapphire glass and finished in calfskin), where it deserves plaudits is on its choice of processor -- a 2.3GHz quad-core Qualcomm chip -- and its operating system, as it will arrive later this month running the latest version of Android, 4.4 KitKat.



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