htc deire hd back to original

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http://androidforums.com – hi guys i wonder if any of you can help. i have an htc hd desire on jellybean my wife has an original htc desire hd to, hers is unrooted and all is as it was when first bought could i back up her phone and save to sd card then put the sd card in my phone and then put her original phone state onto my phone thank so much (General)