Wi-Fi being busy? What to do?

Hi! My Family have a LogiTech Wi-Fi-Router but 2 IPhone, 1 IPad, 1 PSP, and 1 Laptop all of these gadgets uses Wi-Fi but not in the same time. We take turns uses Wi-Fi Seems like only one gadget can ONLY use the Wi-Fi others Can't Connect. My Laptop shows no internet access when 1 gadget uses Wi-Fi. What to do in order to these gadgets use the Wi-Fi in the same time?

Try going into the Router's "Setup" and make sure that the "Maximum Number of Users" isn't set to 1.