Q: Iphone restore

Is the "new" phone really new (bought from an authorized Apple seller) or is it second hand?  If it is a second hand phone, you may have run into activation lock:

Turn off Find My iPhone Activation Lock - Apple Support

If that is the case, there is nothing you can do - the phone is useless to you or anyone else if you can't contact the previous owner and have them remove the activation lock.  Try to get a refund from where you bought it or dispose of it properly.