I'd 1st save n backup all my info (contacts, texts, all the main stuff) And then go delete the entire Internal SD followed with a full wipe including the battery stats and hard reset of my S3. Turn it on, set my info, restore my stuff and add my new L.A location settings. Anything old inside, whatever it is could really screw with someones phone. Starting from scratch is always good w electronics, my opinion. Good Luck!