A:AnswerNo special case needed. My wife and I have very thin cases on our phones so there is no problem using wireless charging; however, I assume certain cases may interfere with wireless charging so you may want to confirm that your case is compatible with wireless charging.
A:AnswerMy wife has a thick faux leather billfold case with credit card slots and so forth, and it will charge through that. I doubt your case would be any different.