Ipad Mini-IOSv6.0.2 As most have mentioned, I too presumed this would automatically connect to WiFi, as my other devices have, but it did not, so if you've done everything mentioned by these great folks on here, and you still can't connect, here's what I did.
I reset my Verizon 3-1/2 year old router (Westell 9100EM15-10). Then I added a device, namely an iPad, per Verizon's support pages. I used the ping they gave for my router management page, where I set up a password and user name (it was the same as it had always been) for the router. This page is where you'll get your SSID and WEP keys, if they're not evident on the back or bottom of your router. Then I went to Settings>WiFi>Choose Network---and this is where it had already picked up on my SSID, but would not connect until I entered the WEP key, which was a 10-digit alphanumeric code. Once I entered that, VOILA!
You might want to check your Server's (Verizon in my case) support pages for adding a device, not the router manufacturer's website.
I do hope this helps. :-))