Where is SMS History?

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http://androidforums.com – I recently changed cell providers and they reset my Galaxy SII (i9100) phone and updated me from Gingerbread to Jellybean. Before the update, which erased most everything on the phone, I made a full backup of the phone memory by copying the contents to my PC. Now I want to restore the SMS history but I can't find any file or folder containing it (searched for words from messages). The data must be there somewhere but perhaps it is encrypted which is why I can't find it. Does anyone know how to find the SMS history in the backup and restore it to my phone. Call history would be good too (General)