Network Key Required

[CaptainOats25]

I have a wireless network at home that is secured by WPA-PSK. When I access the wireless network on my phone it says a network key is required and I enter it. The wi-fi will work for a few minutes and then it will ask me to enter the network key again. Does anyone know how to store the password so I don't have to enter it every time I use my wi-fi at home, or a way to stop it from continually asking me for the password?