IPad dropping WiFi every few seconds after updating iOs to version 5.x
I have the same problem with my iPad 2. It was working fine when my iOS was v.4.3.3. After updating the iOs to version 5.0.1, I kept dropping my WiFi & Internet signal. I am using WPA2, and my SSID is OFF (does not broadcast).
To solve the problem, I updated iOs to v5.1. Same problem occurred. I tried using the OpenDNS as suggested.. Did not work too. WiFi stays on for 5-10 seconds before saying signal was lost. Tried to log on again - iPad replied that I cannot join the network. Tried soft & hard reset, forgetting network settings, resetting all network Setting, etc - still nothing works.
Finally, out of frustration, I turned ON my router's SSID (broadcasting openly). Guess what? My iPad WiFi is working perfectly without any dropped connection.
Please try this quick solution. It may just fix your problems. I realized that this solution may be effective for some iPad users out there. But there is a chance it may not work with others (I tried almost all suggestions in other forums - ranging from updating the wireless router firmware, using an OpenDNS, doing a soft & hard reset of the iPad, etc. Still, nothing worked for my iPad - except this simple SSID setting). Hopefully, this additional solution might help someone. Good luck :-)