Open Control Center on the iPhone
Tap Screen Mirroring
Select the iPad if it appears in the list
If the iPad does not appear, use a third-party mirroring app on both devices
Install the same mirroring app on the iPhone and iPad
Open the app on both devices
Follow the app’s pairing instructions
Make sure both devices are on the same Wi-Fi network
Keep Bluetooth enabled on both devices if required by the app
Start the mirroring session from the app on the iPhone
Accept any connection prompt on the iPad
Stop mirroring from Control Center or the app when finished