Why can't I access my settings anymore?

Well mine works so we can rule out a global glitch.

Have you tried restarting your phone? Usually that clears up oddities that present themselves in my 3GS.

Yes I have tried restarting my phone. It didn’t help. My phone I’d jailbroken btw. Might this have caused the problem?

That is possible. Mine is not jailbroken so I would not know.
Does jailbreaking mean you cannot connect and restore via iTunes?

I can connect and restore on the iTunes but idk if I would be able to jailbreak my phone afterwards again. The settings menu was working fine; till this morning that is. I’ve never had this happen beore. It’s strange really.

I finally figured out why! I had downloaded an app on Cydia called Xtreme Preferences. That app doesn’t really work on my phone though. I decided to delete it, and along with that app, my settings also went! So I reinstalled it and now it works!

Great!

Thanks for the help!