iPhone uses a different operating system compared with Android mobile. If you want to share iPhone's screen with Firestick connected TV, you will require applications that you can download on iOS devices and allow you to do screen sharing and screen mirroring activities on the app. To connect with the TV, you need to open any of the above-mentioned apps from the article and connect the device with the same Wi-Fi network as your TV. and search for the TV's name on the app and when it appears, tap on it to connect and shart screen mirroring.