How to Stop iPhone Keeps Asking for Password iOS 15!
Change Wi fi Settings to Auto-Join. Your iPhone will disconnect from a wi fi network and forget its password if the signals are too low. To avoid this problem, keep your wi-fi network’s settings auto-join so that it can automatically join the network once its signals and performance improve.
iPhone Says “Incorrect Password” for WiFi But It’s Correct on iOS 15 – Fixed 2022