The HP Print Service Plugin is designed for Android devices, not iPhones. iPhones use AirPrint technology for wireless printing. To enable printing, ensure your printer supports AirPrint and is connected to the same Wi-Fi network as your iPhone. Open the content you wish to print, select the share or options menu, choose print, and select your AirPrint-compatible printer from the list... https://123hp-setup-com.us/blog/how-do-i-install-hp-print-service-plugin-for-iphone/