Yeah, I’ve had some experience with that. First off, make sure both your iPhone and Firestick are connected to the same Wi-Fi network. Then, on your iPhone, open the Control Center, tap on Screen Mirroring, and select your Firestick. Sometimes, it helps to restart both devices if there are connectivity issues airplay to Firestick from iPhone. Also, ensure your Firestick’s firmware is up to date. Let me know if that helps, or if you need more details!