A new tweak named Sara has just been pushed to Cydia [via Appadvice] which promises to be a fully functional Siri alternative for all iOS devices including the original iPhone, iPhone 3G and iPod 3G. Best of all, Sara has the same UI as the Siri (see screenshots below). With Sara, users can do many thing such as make phone calls, send messages, search for places everywhere (not just U.S and Canada), chat... 

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