Settings bundle not showing up in iPhone settings

I've had this problem a few times now.

On the simulator; do a 'Reset Content and Settings', clean, and redeploy.

On the device; delete the app, clean, and redeploy.

EDIT: It's also important to make sure that your settings bundle has been added to the current target. That oversight can be very difficult to debug.

While you are adding setting bundle please do not rename it. It should be "Settings.bundle" only. Do not alter it.

iOS Settings App Bug Workaround

If all of the other answers don't work for you, try using the App Switch UI (double-press Home button, or swipe up from bottom bezel) to kill the Settings App.

After everything else didn't work, this fixed the issue for me.

App Store Installs & Older iOS Versions

While I have not tested the hypothesis, I suspect, based on all of the other answers, that this has been an issue for several versions of iOS.

Rather, I think it has everything to do with how the App is installed. Apps installed via the App Store do not appear to exhibit this behavior while Apps installed via Xcode or similar side-loading mechanisms appear to never notify the Settings App that there is a new Settings.bundle available.

Launching the Settings App from scratch always seems to work, however.