Where I work, I use the WiFI on my iPhone 4s. Occasionally (like once or twice a day) it loses connection to the access point. My problem is that it doesn't re-connect automatically. Every time, I have to open the settings, select WiFi, and then tap on the network I want to re-connect to. Any ideas about this? It is really a pain. When I get home, it automatically re-connects to my home WiFi without asking me. If it helps, the WiFI at work is a hidden SSID. It does remember it, though. It also re-connects fine when I get to work each day. It just won't re-connect when it loses the connection while I am at work.