Problem with Wifi and iPhones

[skycustomer27]

Hi we're having connection problems with the iPhones in our household. For the last three evenings in a row the WiFi keeps dropping out on them, but it's fine on my MacBook. 

In phone settings under WiFi it says no connection until I reboot the router. It's happening on more than one iPhone so it's not an individual phone fault. 

Anyone else had this?