Why does my phone keep disconnecting from my WiFi?

[AC Question]

My Samsung Galaxy s5 keeps disconnecting from my wifi. I have to go and manually connect to the wifi. It then takes me to chrome and asks for a wifi sign in. I enter the password to my wifi in settings and it times me out after 3 minutes. I don't know what to do anymore.

 

[hallux]

Have you rebooted your router recently? That's been known to fix sign-in issues with Android devices.