Hello, I recently connected my 5s to a friends computer and synced with his Itunes. My phone is now changed to his name, his email and I am unable to do anything. I cant send email because it says I am not registered,I have accessed itunes and changed my account information, icloud is changed and i have done a soft reset on my phone as well. I also did a back up on his computer using IExplorer for iphones. Is there any way of fixing this so i can use the features and email on my phone?