How to connect router to my iphone

Hi there!

If this is your Wi-Fi network, you may want to check first if anyone from your household changed the Wi-Fi name as Hidden Network

Otherwise, you can do the steps in this article

If your iPhone, iPad, or iPod touch won't connect to a Wi-Fi network - Apple Support

You can check the router settings using the suggestions in his article.

Wi-Fi routers and access points - Recommended settings for.