Why do I have to key in my house Wi-Fi password everytime I come back home to use it?

So the other day my iphone made a fuss where when I receive ONE text, it makes a sound like I've received two. So I read up and reset network settings. Ever since then, everytime I go out from my house then come back, I have to key in the password for my Wi-Fi. Usually it'll automatically connects… Help please.

Have you tried a different Wi-Fi device that you can test it with to see if you have the same issue connecting to the Wi-Fi connection?